There are two main forces acting on an object sliding at a constant speed on a frictionless surface: gravity and the normal force. No force happens in the direction of displacement of the object because the object is sliding at a constant speed.
Gravity is the force that pulls the object downward, while normal force is the force that pushes the object upward to counteract gravity. Since the object is sliding at a constant speed, these two forces are equal and opposite, which means that they cancel each other out. As a result, there is no net force acting on the object, and therefore no work is being done by either force.
Learn more about force at https://brainly.com/question/25825478
#SPJ11
A slanting line was obtained on plotting the displacment-time graph of an object. The object is in ____________ motion.
Answer:
Uniform Motion
Explanation:
When an object travels equal distances (in this case displacement) in equal intervals of time, it is said to be in uniform motion.
A light with a wavelength of 650 nm is made to pass through two slits that are 1.5E −3 m apart. On a screen 6 m behind the slits, an interference pattern appears, with bands of light. What is the distance between the bands? Group of answer choices 3.2 E−3 m 2.6 E−3 m 1.5 E−3 m 3.9 E−3 m
6.5E-7 m * 6 m / 1.5E-3 m = 0.0026 m = 2.6E-3 m is the distance between bands.
As a result, 2.6E-3 m separates the interference bands.
What is interference in wavelength?Interference in wavelength, also known as wave interference, is a phenomenon that occurs when two or more waves with the same or similar frequencies, amplitudes, and wavelengths interact with each other.
What are the two types of wave interference?The two types of wave interference-constructive interference and destructive interference. In constructive interference, peaks of the waves coincide with each other, resulting in a spiral with greater amplitude. In harmful interference, the mountains of one wave coincide with the troughs of the other.
To learn more about waves, visit here:
brainly.com/question/3639648
#SPJ1
An electron is placed between equal and oppositely charged parallel plates separated by 10 mm. It experiences an acceleration of1.75×10 ∧ 14 m/s ∧ 2. What is the potential difference between the charged parallel plates? Image size: s ML Max Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g.0.23, 2 , 1e6.5.23e−8
The potential difference between the charged parallel plates, charged parallel plates separated by 10 mm is 3.5 x 10³.
The potential difference is directly inversely proportional to the distance between the plates since the electric field is kept constant.
We shall assert in this situation that if the distance between the plates is lowered, the potential difference between the plates will also decrease.
The difference in potential between two places in a circuit represents the energy needed to transport a unit charge, or one coulomb, from one point to the other. Volts or joules per coulomb are used to express potential difference.
capacitance of parallel plate capacitor
c = ε A / d , d is distance between plates , A is surface area , ε is constant
As d becomes two times , Capacitance c = 1/ 2 times ie c / 2
potential V = Q / C
Q is constant , potential
v = Q / c /2
= 2 . Q / C
= 2 V
So potential difference becomes 2 times.
NEW P D = 1.75 X 2
= 3.5 x 10³
potential difference between the charged parallel plates is 3.5 x 10³
Learn more about Charged parallel plates:
https://brainly.com/question/14658519
#SPJ4
what is the charge configuration that makes that would produce this electric potential? is it a point charge? line charge? circular charge? or some sort of combination of different kinds of charge?
The negative X axis is where the electric field is pointing. High magnitude (intensity) electric field lines exist in the proper direction or at x > 35. Since the electric field lines resemble straight lines.
this indicates that line charges are what create them. An electric field is a fundamental concept in physics that describes the effect of electric charges on the space around them. An electric field is a vector field that describes the force experienced by a charged particle in the presence of other charged particles. The electric field is defined as the force per unit charge that a charged particle would experience if it were placed in the field. Electric fields can be created by charged particles, such as protons or electrons, or by electric charges on conductive objects. The strength of an electric field decreases with distance from the source of the field and is represented by electric field lines, which provide a visual representation of the field's direction and strength. Electric fields are important in many areas of science and engineering, including electronics, electromagnetism, and telecommunications.
Learn more about electric field here:
https://brainly.com/question/30544719
#SPJ4
6. in measuring the length and diameter of a cylinder, which dimension should be measured more carefully? why?
That being said, it's important to measure both the length and diameter of a cylinder as accurately as possible to ensure precise and reliable results. The measuring tools and techniques used should be appropriate for the size and shape of the cylinder, and any uncertainties or errors in the measurements should be accounted for and minimized as much as possible.
What is Cylinder?
A cylinder is a three-dimensional geometric shape that consists of two parallel, congruent circular bases and a curved lateral surface that connects the bases. A cylinder can be thought of as a tube or pipe with a uniform circular cross-section, and is one of the most basic and fundamental shapes in geometry.
In general, the length of a cylinder should be measured more carefully than the diameter. This is because the length of a cylinder typically determines its overall volume and surface area, and any errors in measuring the length can have a larger impact on these properties than errors in measuring the diameter.
For example, if the length of a cylinder is measured too long or too short by even a small amount, it can result in a significant difference in the volume and surface area of the cylinder, which can affect its performance in various applications. On the other hand, errors in measuring the diameter may have a lesser impact on the overall properties of the cylinder, especially if the cylinder has a relatively small diameter or if the diameter is not a critical factor in its use.
Learn more about Cylinder from given link
https://brainly.com/question/27440983
#SPJ1
In a student-designed experiment, a 4 kg bowling ball is pushed with a broom using an applied force of 10 N. If the friction force on the bowling ball is 1 N, what will be the acceleration of the ball?
Answer:
a = 2.25 m/s^2
Explanation:
The solution is in the image. Also, knowing this picture is from a Schoology assessment page, if this is a test, try to solve the question yourself before asking for help. Also, specify which part you need help on.
The lowest note on a grand piano has a frequency of 27.5 Hz. The entire string is 2.00 m long and has a mass of 420 g. The vibrating section of the string is 1.60 m long. What tension is needed to tune this string properly?
Using the wave equation, the velocity of the wave on the string can be calculated as 55.0 m/s. Using this, the tension needed to tune the string can be calculated as 1,101 N.
What is the relationship between tension, frequency, and length of a vibrating string?The frequency of a vibrating string is directly proportional to the tension in the string and inversely proportional to its length. This means that as tension increases, the frequency of the string also increases, while a decrease in length will result in a higher frequency as well. The relationship between tension, frequency, and length of a vibrating string is described by the wave equation, which states that the speed of the wave (and hence the frequency) is equal to the square root of the tension divided by the linear density of the string, multiplied by the reciprocal of the length.
To know more about Frequency visit:
https://brainly.com/question/5102661
#SPJ4
the tortoise and the hare are running a 1 km race. after running comfortably for 7 s, the hare is so far ahead that he decides to take a nap under a tree, 100 m away from the finish line. if the tortoise is moving constantly at a speed of 0.27 m/s, and the maximum speed of the hare is 15 m/s, how long can the hare afford to nap if he does not want to lose the race?
The hare is currently 100 meters from the finish line and 895 metres from the starting line. The tortoise is 895 m from the starting line and is travelling at a speed of 0.27 m/s in the direction of the finish line.
What affect the speed of constantly moving object?The tortoise must go 895 meters whereas the hare must travel only 100 meters to reach the finish line. The tortoise will keep moving towards the finish line and may finally cross it before the hare wakes up if the hare dozes off for a predetermined period of time.
Inertia has an impact on both moving and stationary objects, according to Newton's first law of motion. According to Newton's first law, an item will remain at rest or move straight ahead at a constant speed unless another force is operating on it that is not balanced.
Therefore, If the hare travels at a speed of 15 m/s, he can afford to rest for a maximum of 6.67 seconds without losing the race.
Learn more about speed here:
https://brainly.com/question/6280317
#SPJ4
in a carnival ride, chairs swing about a vertical axis with a constant angular velocity so the swing rope is inclined at 65o to the vertical as shown. the rope is 40 ft long, the combined weight of the rider and chair is 180 lb, and the weight of the rope may be neglected. determine the tension t in the rope and the linear velocity of the chair and rider.
The tension T in the rope is 163.13lb and the linear velocity of the chair and rider is 36.25ft/s.
Given the vertical angle of inclination (θ) = 65°
The length of the rope (L) = 40ft
The combined weight of rider and chair (W) = 180lb
Let the tension in the rope = T
The linear velocity of the rope = v
Tension in the rope is calculated as:
T = mgsinθ such that W = mg
T = (180lb) x (sin 65°) = 163.13 lb
Linear velocity of the chair and rider (v):
v = (L) x (2πr) / mg = 2πrL/W where r is the radius of circle formed.
r = (40 ft) / (2π) = 6.37 ft
v = (163.13 lb) x (2π x 6.37 ft) / (180 lb) = 36.25 ft/s
To learn more about tension click here https://brainly.com/question/11348644
#SPJ4
The max power of an elevator is 10,000 j/s. how much time would it take the elevator to lift 500 kg 40 meters?
The force here is 4900 N for 500 kg of lift. The work done being 196000 J for 40 meters. Then time is work done divided by time. Therefore, it will take 19.6 seconds.
What is power ?Power is the rate of work done or energy. The unit of power is J/s which is equal to one watt.
P = w/t.
where W = F. ds.
Given mass = 500 kg
F = mg = 500 kg × 9.8 m/s² = 4900 N.
displacement = 40 meters.
then work done W = 4900 N × 40 m = 196000 J.
Then,
power = work done/time
10000 J/s = 196000 J/t
t = 196000/10000 = 19.6 seconds.
Therefore, the time it required to take to lift the elevator is 19.6 seconds.
Find more on power:
https://brainly.com/question/30431572
#SPJ1
I need help in this please
The net force along the origin is zero in image (3).
What would make the net force at the origin to be zero?We know that the image in the question shows us three charges that have been shown according to the diagram in the image. It is important that we note that the net force is the resultant force that is acting at the origin zero in each of the cases.
We would now have to look at the magnitudes of the charges in each of the cases so as to obtain the resultant force of zero at the origin. Thus we can see that in the case we have, the set up in (3) is such that the resultant at the origin would give a zero magnitude.
Learn more about electric force:https://brainly.com/question/2526815
#SPJ1
a proton is accelerated in a cyclotron to a very high speed that is known to within . what is the minimum uncertainty in its position?
The minimum uncertainty in the position of a proton accelerated in a cyclotron to a very high speed is equal to the wavelength of the light emitted from the particle as it is accelerated.
The minimum uncertainty in the position of the proton is determined by Heisenberg's uncertainty principle. According to this principle, the minimum uncertainty in the position of the proton is equal to the wavelength of the light used to measure its position. In other words, the minimum uncertainty in the position of the proton is equal to the inverse of the energy of the light used to measure its position. In the case of a cyclotron, the light used to measure the position of the proton is the light emitted from the particle as it is accelerated. The energy of this light is related to the speed of the proton. Thus, the minimum uncertainty in the position of the proton is equal to the inverse of the energy of the light, which is equal to the inverse of the speed of the proton - or the wavelength of the light emitted from the particle as it is accelerated.
To learn more about uncertainty click here https://brainly.com/question/15103386
#SPJ4
the (nonconservative) force propelling a 1.50 103-kg car up a mountain road does 4.30 106 j of work on the car. the car starts from rest at sea level and has a speed of 24.0 m/s at an altitude of 2.10 102 m above sea level. obtain the work done on the car by the combined forces of friction and air resistance, both of which are nonconservative forces.
The required work done by the combined force is -2.572 × 10⁶ J and the negative sign indicates that the force has component in the direction to the displacement.
We know that the work done by all forces equals the change in potential energy
w friction + w air + w engine = mv²f + mghf/2 - mv²i + mghi/2
Here,
hi = 0 m
vi = 0 m/s
When we combine all of the supplied values, we get:
W friction + W air + 4.30 * 10⁶ = m × (v²f+ ghf)/2 - 0
W friction + W air = 1.5 × 10³ × (24² + 9.8 × 2.2 × 10²)/2 - 4.30 × 10⁶
W friction + W air = -2.572 × 10⁶ j
Friction is a force that resists the motion of things; friction may cause items to slow down. Friction is represented by air resistance. Moving objects are slowed by air resistance. The air resistance of an item is affected by physical features such as its form.
When air pushes against a moving object, it creates air resistance force. Frictional forces include air resistance. Force is always applied against the motion of an item.
Learn more about Friction from here;
https://brainly.com/question/13000653
#SPJ4
Correct Question:
The (nonconservative) force propelling a 1.50 × 10³ kg car up a mountain road does 4.30 × 10⁶ J of work on the car. the car starts from rest at sea level and has a speed of 24.0 m/s at an altitude of 2.10 × 10² m above sea level. obtain the work done on the car by the combined forces of friction and air resistance, both of which are nonconservative forces.
why the efficiency of the system cannot be 100%
as an example, a 3.90- kg aluminum ball has an apparent mass of 2.50 kg when submerged in a particular liquid: calculate the density of the liquid.
The density of the liquid in which the aluminum ball was submerged is found to be 2.7g/cm³.
When submerged in a certain liquid, a 3.90 kilogram aluminum metal ball has an apparent mass of 2.50 kg.
Aluminum has a density of 2.7gm/cm3.
We already know that 3.9 kg = 3900gm density = mass/volume
2.7 = 3900/volume
volume = 3900/2.7 cm³
We also know that the volume of liquid displaced Equals the volume of the ball,
The mass of liquid exhibited = the apparent weight of the Al ball = 2.5 kg = 2500 gm, and
Density of liquid = 2500/(3900/2.7)
= 2.7 gm/cm³
As a result, the density of the liquid is 2.7 gm/cm3.
To know more about density, visit,
https://brainly.com/question/1354972
#SPJ4
what is the iupac name for the compound with a chemical formula b6si?
The IUPAC name for the compound with a chemical formula B6Si is Silicon hexaboride.
B6Si denotes the molecular formula of a chemical or organic compound which comprises of six boron atoms bonded to one silicon atom. Silicon atom is, therefore, the central atom in this molecule. The IUPAC name of this compound is Silicon hexaboride, as it contains six boron atoms, B6Si.
IUPAC nomenclature in organic chemistry is a system of naming organic chemical compounds based on the rules specified by International Union of Pure and Applied Chemistry. In this system, the organic compounds are named on the basis of their arrangement of atoms in the molecule and the types of bonds present there.
To know more about IUPAC names, refer:
https://brainly.com/question/16180944
#SPJ4
True or false? A gamma ray of wavelength 1.00×10−8 cm has enough energy to remove an electron from a hydrogen atom.
True. A gamma ray has a very short wavelength and high energy, and can ionize atoms by knocking off electrons from their outer shells.
define wavelength ?
Wavelength is the distance between two successive crests or troughs of a wave, or equivalently, the distance traveled by a wave during one complete cycle. It is usually denoted by the Greek letter lambda (λ) and is typically measured in units of length, such as meters or centimeters.
Wavelength is a physical property of waves, such as light waves, sound waves, and water waves. It is defined as the distance between two consecutive points in a wave that are in phase and have the same amplitude and direction of motion. In other words, it is the distance over which the wave's shape repeats.
For example, in a water wave, the wavelength is the distance between two consecutive wave crests or troughs. In a light wave, it is the distance between two consecutive peaks or valleys of the electromagnetic field.
Wavelength is usually measured in meters or other units of length, depending on the type of wave. It is an important characteristic of waves because it is related to other properties, such as frequency and energy. For example, waves with shorter wavelengths have higher frequencies and more energy, while waves with longer wavelengths have lower frequencies and less energy.
To learn more about wavelength follow the given link: https://brainly.com/question/24452579
#SPJ4
Why are the seasons reversed in the southern hemisphere?
The seasons are reversed in the southern hemisphere because one part of the planet is more directly exposed to the rays of the Sun than the other.
The northern and southern hemispheres always experience the opposing seasons, regardless of the time of year. This is due to the fact that, depending on whether it is summer or winter, one region of the planet is alternately more directly exposed to the Sun's rays than the other.
A season is a division of the year based on variations in the local climate, ecology, and number of daylight hours. The axial parallelism of Earth's inclinated orbit around the Sun causes seasons on Earth. Seasons are distinguished by differences in the amount of sunlight that reaches Earth's surface in temperate and polar regions. These fluctuations may lead some animals to migrate or go into hibernation while others may cause vegetation to fall dormant.
Learn more about Seasons of Hemisphere:
https://brainly.com/question/30301114
#SPJ4
Based on what you learned about telescopes, select all of the correct statements from the following list.
- The diameter of a telescope controls its magnification. - Recently built modern telescopes are reflectors. - Telescopes linked together as an interferometer have an effective size equal to the size of the telescopes added together. - The largest telescopes are refractors. - Chromatic aberration limits the useful size of any type of telescope
The correct statements are: - Newly built modern telescopes are mirrors. - Telescopes linked together like an interferometer have an effective size equal to the size of the telescopes added together. - Chromatic aberration limits the usable dimensions of any type of telescope.
What is a telescope?
Telescope is an open source project that enables developers to quickly and easily create modern web and mobile applications. It is built on Meteor, a comprehensive JavaScript platform for building modern web and mobile apps. Telescope is designed to be highly customizable and extensible, allowing developers to add features like social media, e-commerce, and custom analytics.
The false statements are: The diameter of the scope controls its magnification. The largest telescopes are refractors.
To learn more about Telescope
brainly.com/question/28113233
#SPJ1
suppose that 18 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m?
The work which is needed to stretch the spring from 12 m to 14 m is 56J if 18 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m.
Given the amount of work done (W) = 18J
The initial length of spring (L1) = 6m
The length of spring after stretching (L2) = 9m
The elongation of spring (x) = L2 - L1 = 9 - 6 = 3m
We know that work done on a spring is equal to force multiplied by the spring elongation such that W = Fx where F = 1/2kx ; k is spring constant
18 = 1/2 * k * x^2
k = 36/9 = 4
Given the original length of spring = 12m
The length of spring after stretching = 14m
stretching length from 6m to 12m is 6m
stretching length from 6m to 14m is 8m
The elongation in spring = (x')
Work done on the spring = 1/2k(x')^2 = 1/2 * 4 * (8^2 - 6^2) = 56J
To learn more about force click here https://brainly.com/question/29044739
#SPJ4
subduction zones occur a what type of plate boundary?
Subduction zones occur at convergent plate boundaries, where two tectonic plates are colliding with each other.
There are three types of convergent plate boundaries: oceanic-oceanic, oceanic-continental, and continental-continental. In oceanic-oceanic convergence, one oceanic plate is forced beneath another, and the subducting plate is usually the older and denser of the two. In oceanic-continental convergence, an oceanic plate is forced beneath a continental plate, creating a deep ocean trench and a chain of volcanic mountains on the continent. In continental-continental convergence, the two plates collide and cause crustal thickening, mountain building, and deformation.
Subduction zones are areas where one tectonic plate is forced underneath another plate, usually because the subducting plate is denser than the plate it is colliding with. As the plates move towards each other, the subducting plate is pushed deep into the Earth's mantle, causing it to melt and form magma.
Learn more about tectonic plates:
brainly.com/question/19317822
#SPJ4
the sun and the rest of the solar system formed about 5 billion years ago from a huge cloud of dust and gas called a .
The sun and the rest of the solar system formed about 5 billion years ago from a huge cloud of dust and gas called a "solar nebula."
What is a solar nebula?A solar nebula is a large, diffuse cloud of gas and dust that is the starting point for the formation of a star and its associated planetary system. The term "solar nebula" specifically refers to the cloud of gas and dust that surrounded the early sun, which eventually condensed to form the planets and other objects in our solar system.
Solar nebulae are thought to form from the remnants of supernovae, which scatter gas and dust into the surrounding interstellar medium. These remnants eventually begin to collapse under their own gravity, forming a dense core at the center of the cloud. As the core becomes more massive, its gravity pulls in more gas and dust from the surrounding nebula, forming a disk-shaped structure with the dense core at its center.
The disk of gas and dust that surrounds the central core of a solar nebula is called a protoplanetary disk. It is from this disk that planets, moons, asteroids, and comets can form through a process called accretion. As small dust particles collide and stick together, they form larger and larger bodies, eventually growing into planetesimals and, eventually, planets.
To know more about Solar Nebula, visit:
https://brainly.com/question/13143665
#SPJ4
The load across a battery consists of two resistors, with values of 15 Ω and 47 Ω, connected in series. What is the equivalent resistance of the load?
The load across a battery consists of two resistors, with values of 15 Ω and 47 Ω, connected in series. 62 Ω is the equivalent resistance of the load.
A series circuit's overall resistance equals the sum of its individual resistances. The total of the individual voltage drops is equal to the voltage supplied to a series circuit. In a series circuit, the voltage drop across a resistor is exactly proportional to its size. When resistors are linked in series, they are connected one after the other.
To calculate the total overall resistance of a series of resistors connected in this manner, add the individual resistances together. This is accomplished by applying the following formula:
R = R₁ + R₂ + .... + Rₙ
In this problem, we have two resistors connected in series:
R₁ = 15 Ω
R₂ = 47 Ω
Now, the equivalent resistance of the circuit is
R = R₁ + R₂
= 15 Ω + 47 Ω
= 62 Ω
A series of n identical resistors of resistance R ohm have an effective resistance of X ohm when connected in series, whereas a parallel connection has an effective resistance of Y ohm. A parallel circuit's total current is the sum of the individual branch currents.
Learn more about Resistors from here; https://brainly.com/question/24297401
#SPJ4
1 The speeds of a car travelling on a straight road are given below at successive intervals of 1 second. Time/s Speed/m/s 0 0 1 2 2 4 3 6 4 8 Calculate a the average speed of the car in m/s b the distance the car travels in 4s c the constant acceleration of the car. 2 If a train travelling at 10 m/s starts to accelerate at 1 m/s2 for 15s on a straight track, calculate its final speed in m/s.
The average speed = 2 m/ s
The distance traveled in 4s is 16m
the constant acceleration is
2. the final speed is 25 m/s
How to solve for the valuesAverage speed = distance / time
= 2 + 4 + 6 + 8 / 1 + 2 + 3 + 4
= 20 / 10
= 2
The distance in 4s:
we would solve using the formula
ut + 1/2at^2
0 + 1/2 * 2 * 4^2
= 16 meters
2. If the train is at 10 m /s for 15 s, we would use the formula
v = u + at
u = 10
a = 1
t = 15
then
v= 10 + 1× 15
=v= 25 m/ sec
Read more on speed here: https://brainly.com/question/4931057
#SPJ1
a simple bob pendulum has a length of 1.05 meters. what would be the period of the pendulum on earth were the acceleration do to gravity is 9.81m/s2?
The time period of the simple bob pendulum on earth is found to be 0.21 seconds.
Explain the time period for simple bob pendulum?The length of a basic pendulum is: It is symbolised by the letter "T" and is defined as the amount of time needed for the pendulum to complete one full oscillation.
The simple pendulum's amplitude: The distance the pendulum travels from its equilibrium point to one side is how it is defined.At amplitudes less than around 15o, a mass m suspended by such a wire of length L behaves like a simple pendulum and experiences simple harmonic motion. The length of the string is L, and the acceleration caused by gravity is g, hence the period of the a simple pendulum.Acceleration due to gravity g = 9.81m/s2.
Length of the simple bob pendulum l = 1.05 meters.
Time period T ;
T = 2π√l/g
T = 2*3.14*√(1.05/9.81)
T = 0.2055
T = 0.21
Thus, the time period of the simple bob pendulum on earth is found to be 0.21 seconds.
To know more about the simple bob pendulum, here
https://brainly.com/question/26449711
#SPJ1
consider the three parallel plate capacitors shown in figure. all three have an identical plate area and plate separation. capacitor a is air filled. capacitors b and c have their gaps half filled with a dielectric material as shown. which arrangement can store the maximum energy for a given potential difference applied?
The arrangement that can store the maximum energy for a given potential difference applied is Capacitor C.
This is because Capacitor C has the highest capacitance of the three capacitors, due to its dielectric material being present in the gap between its plates. The dielectric material increases the capacitance of a capacitor by increasing the electric field between the plates. Therefore, the capacitance of Capacitor C is higher than that of Capacitors A and B, allowing it to store more energy for a given potential difference applied. The equation for calculating the capacitance of a capacitor is given by C = εo εr A/d, where εo is the permittivity of free space, εr is the relative permittivity of the material in between the plates, A is the area of the plates and d is the distance between the plates. Since Capacitor C has the highest relative permittivity of the three capacitors, it has the highest capacitance, and therefore stores the most energy for a given potential difference applied.
To learn more about capacitor click here https://brainly.com/question/17176550
#SPJ4
which of these can help determine air pressure? select the two correct answers.a. wind speed of the air
b. moisture in the air
c. temperature of the air
d. cloud patterns in the air
The two factors that can help determine air pressure are the temperature of the air and the cloud patterns in the air that are in options c and d, because wind speed and moisture content of the air are not direct measures of air pressure.
What is the air pressure?It depends upon the temperature, as when the temperature increases, air molecules gain energy and move faster, leading to a decrease in air pressure, and as the temperature decreases, there is an increase in air pressure. Some clouds are present at low air pressure, while others are at high air pressure.
Hence, the two factors that can help determine air pressure are the temperature of the air and the cloud patterns in the air that are in options c and d, because wind speed and moisture content of the air are not direct measures of air pressure.
Learn more about the air pressure here.
https://brainly.com/question/15189000
#SPJ1
a smooth metal plate with a surface area of 380 cm2 is traveling in water at a velocity of 6.3 m/s, with the flow parallel to the long dimension of the surface. if the reynolds number at the trailing edge of the plate is 950,000, what is the friction drag acting on the surface of the plate?
The friction drag acting on the surface of the plate is approximately 0.074 N.
The friction drag acting on the surface of the plate can be calculated using the following formula:
[tex]$F_D = \frac{1}{2} \rho V^2C_D A$[/tex]
where \rho is the density of water,
V is the velocity of the plate relative to the water,
C_D is the drag coefficient, and
A is the surface area of the plate.
To determine the drag coefficient C_D.
We need to know the Reynolds number of the flow.
For a flat plate, the drag coefficient can be estimated using the following formula for laminar flow:
[tex]$C_D = \frac{1.328}{\sqrt{Re_x}}$[/tex]
where Re_x is the Reynolds number based on the distance from the leading edge of the plate to the point of interest (in this case, the trailing edge).
For turbulent flow, we can use the following formula for the drag coefficient:
[tex]$C_D = \frac{0.074}{Rex^{1/5}}[/tex]
The critical Reynolds number for a flat plate is around 5,000, above which the flow is typically turbulent.
In this case, the Reynolds number of 950,000 indicates that the flow is definitely turbulent.
To calculate the drag coefficient, we need to use the turbulent flow formula:
[tex]$C_D = \frac{0.074}{Rex^{1/5}}[/tex]
[tex]= \frac{0.074}{(380 \times 6.3 / \nu)^{1/5}}[/tex]
where nu is the kinematic viscosity of water at the given temperature.
Assuming a temperature of 25°C, the kinematic viscosity of water is approximate nu = 8.85* [tex]10^{-7}[/tex] [tex]m^2\\[/tex]/s.
Plugging in the values, we get:
[tex]C_D = \frac{0.074}{(380 \times 6.3 / 8.85 \times )^{1/5}}[/tex] approx 0.0093
Finally, we can calculate the friction drag:
[tex]F_D = \frac{1}{2} \rho V^2 C_D A\\ = \frac{1}{2} \times 1000 \times 6.3^2 \times 0.0093 \times 0.0038\\ \approx. 0.074N[/tex]
Therefore, the friction drag acting on the surface of the plate is approximately 0.074 N.
For similar questions on friction drag,
https://brainly.com/question/24338873
#SPJ4
what is the angle between a wire carrying an 8.00-a current and the 1.20-t field it is in if 50.0 cm of the wire experiences a magnetic force of 2.40 n?
Angle between the wire carrying an 8.00-A current and the 1.20-T field it is in is approximately 4.32 degrees in magnetic force.
To find the angle between a wire carrying an 8.00-A current and the 1.20-T field it is in, we can use the formula:
F = BILsinθ
where F: magnetic force, B : magnetic field, I : current, L : wire length, and θ : angle lying between wire, magnetic field.
Rearranging the formula, we get:
θ = [tex]sin^-1(F/BIL)[/tex]
Substituting the given values, we have:
θ = [tex]sin^-1(2.40 N / (1.20 T * 8.00 A * 0.50 m))[/tex]
θ =[tex]sin^-1(0.075)[/tex]
θ ≈ 4.32 degrees
Learn more about magnetic force here:
https://brainly.com/question/3160109
#SPJ4
looking through a particular lens, a student notices a magnified image as shown below. based on the measurements depicted in the figure, what is the focal length of this lens?
The focal length of this lens is approximately 2.5 cm when looking through a particular lens, a student notices a magnified image.
Based on the given measurements in the figure, we can use the thin lens equation:
1/f = 1/di + 1/do
where f is the focal length, di is the image distance, and do is the object distance.
From the figure, we can see that the object distance (do) is 2.5 cm and the image distance (di) is 10 cm.
Substituting these values into the thin lens equation, we get:
1/f = 1/10 cm + 1/2.5 cm
Simplifying, we get:
1/f = 0.4
Therefore,
f = 1/0.4 cm
f ≈ 2.5 cm
So the focal length of this lens is approximately 2.5 cm.
Learn more about focal length :
https://brainly.com/question/16188698
#SPJ4
