Whenever you wish to bring an object into focus under high power, the correct order of steps are as listed below:
"Place slide on stage and secure with stage clips.""Turn on the light and center the specimen over the light source.""Focus specimen on low power using coarse focus adjustment.""Use fine focus to sharpen the image under low power.""Rotate high power lens into position.""Readjust fine focus under high power to produce the sharpest image."What is a microscope?A microscope can be defined as an optical device that is typically designed and developed to produce a magnified (an enlarged) image of a minute (very tiny) object, so as to show all the littlest and tiniest details about the object which cannot be seen by the natural human eye.
The types of microscopes.In Science, there are different types of microscope used for magnifying an object and these include the following:
Polarizing microscope.Transmission electron microscope.Inverted microscope.Scanning electron microscope.Compound light microscope.In conclusion, you should use the coarse focus adjustment to focus the specimen on low power and then, ensure that fine focus is readjusted under high power in order to produce the sharpest image of this specimen.
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Complete Question:
Indicate the correct order of steps as you bring an object into focus under high power. Rank the options below.
Place slide on stage and secure with stage clips.
Focus specimen on low power using coarse focus adjustment.
Use fine focus to sharpen the image under low power.
Readjust fine focus under high power to produce the sharpest image.
Rotate high power lens into position.
Turn on the light and center the specimen over the light source.
In lecture, it was discussed measurements of mass, temperature, time, volume and length. which of these is not an si base unit (hint - only one)?
From the options provided in the question, the measurement which is not an SI base unit is volume.
What is SI base unit?This is referred to as the standard and fundamental unit of measurement of various quantities or variables which is defined arbitrarily and not by combinations of other units.
Volume is a quantity which is derived from the combination of lengths in a three-dimensional manner which is why the formula is length× breadth×height and the unit is cm³. This is gotten from the combination of the unit of length which is cm.
This is therefore the reason why volume was chosen as the most appropriate choice.
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An object is pulled northward with a force of 10 n and southward with a force of 15 n. the magnitude of the net force on the object is:________
a. 0 n.
b. 5 n.
c. 10 n.
d. 15 n.
e. none of these
The correct option is (b) 5n
A result, the object is being acted upon by a net downward force of 5N.
Briefing :The force that is produced by summing the vector sums of all the forces acting on an object is known as the resultant force. The effect of the resulting force is the same as the sum of all the acting forces operating on the object. The direction of the forces must be considered when calculating the resulting force.
The northward force is Fn = 10N, given.
Fs = 15N is the southern force.
The net force on the phone is Fnet =?N, which is necessary.
Downward pressure is applied by the object's weight, and upward pressure is applied by upward resistance. The vector sum of these two forces will represent the net force.
Fnet = Fs - Fn (Considering the direction downward as positive)
Fnet = 15N - 10N
Fnet = 5N
There is a net downward force of 5 N acting on the object as a result.
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What are some of the limitations of this two-dimensional model of electric fields?
Some limitation of this two-dimensional model of electric fields are
Vectors can only be shown from one particle to another, but we don't see that in this model. We cannot see the object in the "z" direction as we could if it were a three-dimensional model.The direction of the field is taken to be the direction of the force it would exert on a positive test charge.The electric field is radially outward from a positive charge and radially inwards in a negative point charge i.e. not restricted to only two directions.Electric field is the electrical property associated with each point in space when charge in any form is present.
Three dimensional model must be used to find electric field of a particle as it is easy to understand and also provides clear visualization.
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Wich part of the mind uses conscious-making to find a compromise between the id and the superego
The Id
The id, according to Freud, is the main element of personality because it is the source of all psychic energy.
The only aspect of personality that is present from birth is the id.
This element of personality, which consists of innate and primordial behaviors, is essentially unconscious.
The pleasure principle, which aims for instant fulfillment of all needs, wants, and desires, is what motivates the id.
A condition of tension or anxiety results if these demands are not met right away. An increase in hunger or thirst, for instance, should prompt a prompt attempt to eat or drink.
Early in life, the id is crucial since it guarantees that an infant's wants are addressed. if the infant is uneasy or hungry.
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If an object were in space like voyager satellite we launched how much force is be needed to keep it going
Answer:
zero
Explanation:
Zero force is required to keep it moving at a constant speed
due to inertia ====> objects at rest tend to stay at rest and objects moving tend to remain that way unless acted upon by forces
An electron travels at a speed of 28700 km/s parallel to an electric field of magnitude 12000 n/c. what distance will the electron travel before coming to a stop?
Answer:
The distance the electron travelled before coming to a stop is 195.19 x 10-13m
Explanation:
Flux in an electric field is given by;
Fe = qE
E= 12000 n/c.
q= 1.602x10-19 (charge of an electron)
Fe = 1.602x10-19c x 12000 n/c.
Fe= 1.92x10-17 N
Since F=ma
M = mass of an electron = 9.11x 10-31
a=?
1.92x10-17 N = 9.11x 10-31 x a
a = 1.92x10-17 N/9.11x 10-31
a = 2.11 x 1013
Given
V2= u2 +2as
Since v= 0 (final velocity is zero)
- u2 = 2as
(28.7)2 = -2 x (2.11 x 1013) x s
823.69 = -4.22 x 1013xs
S = 823.69/ -4.22 x 1013
S = 195.19 x 10-13m
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A rock is dropped from a 134-m-high cliff. how long does it take to fall (a) the first 67.0 m and (b) the second 67.0 m?
The time taken by the rock to travel another 67m is 1.5 s.
Briefing :Taking +y direction downward and y₀= 0, we have y = V₀t+1/2 gt², which (with V₀≠0) yields t= [tex]\sqrt{\frac{2y}{g(a)} }[/tex]
(a) For this part of motion, y₁ = 67m, so that
t₁ = [tex]\sqrt{\frac{2(67)}{9.8 m/s^{2} } }[/tex] = 3.7 s
(b) For this next part of motion. we note that the total displacement is
y₂= 134m
Therefore, the total time is t₂ = [tex]\sqrt{\frac{2(134)}{9.8m/s^{2} } }[/tex] = 5.2 s
The difference between this and the answer to part (a) is the time required to fall through that second 67m distance:
Δt = t₂-t₁ = 5.2s - 3.7s = 1.5s
Therefore the time taken by the rock to travel another 67m is 1.5 s.
Gravity causes a body to descend faster, and as it does, the air resistance that slows it down rises. This keeps happening until the weight of the object and the force of air resistance are equal.
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Both astronomy and astrology study the stars. which one is considered a natural science? explain your reasoning.
Astronomy is a branch of natural science since it focuses on the observation and prediction of celestial occurrences using physical rules. Astrology is a branch of natural science since it involves watching and forecasting celestial events and has an impact on both human affairs and the natural world.
What do astrology and astronomy involve ?Everything in the universe excluding the atmosphere of our planet is covered in the study of astronomy. The Sun, Moon, planets, and stars are examples of celestial objects that humans can view with our unaided eyes. It also includes objects like remote galaxies and tiny particles, which we can only see with the use of telescopes or other devices.
Astrology is a sort of divination that includes predicting events that happen on Earth and in the world of Humans by observing and interpreting the fixed stars, the Sun, the Moon, and the planets.Learn more about Astrology and astronomy here:
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A person of weight 80 kg jumped off a platform of height 1 m and safely landed on their feet. what is the magnitude of the momentum change during the collision? give answer in si units.
The momentum change is 125440 kg.m/s.
We need to know about momentum to solve this problem. Momentum can be defined as the degree of difficulty to stop a moving object. It can be determined by
P = m . v
where P is momentum, m is mass and v is velocity.
Momentum also can be defined by kinetic energy
KE = 1/2 . m . v²
KE = P² / 2m
where KE is kinetic energy
From the question above, we know that:
m = 80 kg
h = 1 m
g = 9.8 m/s²
By conservation of energy, the initial kinetic energy is zero because of the person is in static condition. Hence, the initial momentum is
KEo = Po² / 2m
Po = 0 kgm/s
After the jump, the person will have maximum kinetic energy before landing which can be written
KE = PE
P² / 2m = m . g . h
P² = 2m² . 9.8 . 1
P² = 2.80² . 9.8 . 1
P² = 125440 kg.m/s
The momentum change is
ΔP = P - Po
ΔP = 125440 - 0
ΔP = 125440 kgm/s
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A test rocket at ground level is fired straight up from rest with a net upward acceleration of 20 m/s2. After 4.0 s, the motor turns off, but the rocket continues to coast upward with insignificant air resistance. What maximum elevation does the rocket reach?
The maximum elevation the rocket will reach is 160 m.
Maximum height attained by the rocketThe maximum height reached by the rocket is calculated as follows;
h = vt + ¹/₂at²
where;
v is the initial velocity of the rocket = 0t is the time of motiona is the acceleration of the rocketsubstitute the given parameters and solve for maximum height.
h = 0 + ¹/₂(20)(4)²
h = 160 m
Thus, the maximum elevation the rocket will reach is 160 m.
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The energy required to warm one gram of water by one celsius degree is called a _______
The energy required to warm one gram of water by one celsius degree is called a specific heat
The specific heat also known as specific heat capacity, is an intensive property specific, and representative of each substance. It is defined as the energy or amount of heat required to raise the temperature of 1 kilogram (kg) of mass by one degree Celsius (°C).
In the International units system of measurement the specific heat is expressed in Joules per kilogram per degree Kelvin.
What is temperature?It is the physical magnitude that allows us to know the degree of heat that a body or an environment has. The higher the temperature, the greater the degree of heat.
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1. Convert the following measurements to the units specified.
2.5 days to seconds
Answer: 216000
Explanation:
60 seconds in 1 hour
24 hours in a day = 1440
148 hours in 7 days
A powerful motorcycle can accelerate from rest to 29.2 m/s in only 3.9 s. What is its average acceleration in meters per second squared?
56 meters have been determined as the distance traveled.
s-displacement, u-initial velocity, v-final velocity, a-acceleration, and t-time variables are equal to v=u + at and v2 = u2 + 2ass, respectively.
The motorcycle's values are as follows:
u= 0m/s
v=28m/s
t=4s
a=??
s=??
v=u +at
28= 0 + 4a
4a=28
a= 7m/s2
As a result, the typical acceleration is 7 m/s2.
displacement u2+2as, v2=s
28^2= 0^2+ (2x7s)
784= 14s
s= 784/14
s= 56
Therefore, the journey's distance was 56 meters.
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A charge q is located at the origin (0,0). the electric field at (x,y) is given (in terms of its components) by:__________
A charge q is located at the origin (0,0). the electric field at (x,y) is given (in terms of its components) by E1i^+E2j^+E3k^.
The size of the electric field produced by a point charge Q is determined by this equation. The distance r in the denominator is the separation between the point of interest and the point charge, Q, or the center of a spherical charge. Positive charge is moving in the opposite direction, toward a negative charge. Q1 will produce an E-field vector that points left at the origin, and Q2 will produce an E-field vector that points right. The electric force F, or Coulomb force, exerted per unit positive electric charge q at that place can be used to determine an electric field's strength, or E = F/q.
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A random sample of 10 subjects have weights with a standard deviation of 12.3898 kg. what is the variance of their weights? be sure to include the appropriate units with the result.
Answer:
The variance is 153.507 kg2 for a random sample of 10 subjects that have weights with a standard deviation of 12.3898 kg
Explanation:
Variance is a measure of variation. It is determined by averaging the squared deviations from the mean.
The degree of dispersion in your data collection is indicated by variation. The greater the spread of the data, the greater the variance in proportion to the mean.
The standard deviation is generated from variance and indicates how much each number deviates from the mean on average. The square of the standard deviation gives the formula for variance in this case.
S = σ2
where
s= variance
σ = standard
s= 12.38982
s= 153.507 kg2
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The force experienced by a unit test charge is a measure of the strength of an electric:
-zone
-field
-sphere
-sector
Answer:
the answer should be field.
A one dimensional array data is declared as follows: char data[4]; the base address is 2222 and each value takes up one location in memory. what is the address of the fourth element?
The correct answer for the address of the fourth element will be 2225.
The fourth element will be data -.
So if the data[0] element starts at 2222, and each char element takes 1 byte, then
data[0] starts at 2222
data[1] starts at 2223
data[2] starts at 2224
data[3] starts at 2225
Answer: 2225
A linear data structure that collects elements of the same data type and stores them in contiguous and adjacent memory locations is known as an array. Arrays use an index system that ranges from 0 to (n-1), where n is the array's size.
The array data type is a compound data type represented in the database dictionary by the number 8. Arrays are collections of elements of the same data type that are accessed via an index (attribute) number. The terms array, list, vector, and sequence are all synonymous
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convert 6000tons into kilograms
pls show workings
thank you
If you are using standard tons, then each ton is 907.18474 kg.
Multiply that and your answer is 5,443,108.44 kg.
If you are using metric tons, then multiply by 1,000.
6,000 * 1,000 = 6,000,000 kg
According to the newton's law of viscosity, the proportional constant that satisfies the relation between the shear strain rate and the velocity gradient is the _____. multiple choice question.
According to the newton's law of viscosity, the proportional constant that satisfies the relation between the shear strain rate and the velocity gradient is the Viscosity coefficient.
What is Viscosity coefficient ?
The fluid's resistance to flowing is measured by the coefficient of viscosity. The viscosity of a gas is often lower than that of a liquid. Fluidity is the opposite of viscosity. A liquid with a high viscosity thus has a poor fluidity. There are two forms of viscosity that are frequently used: dynamic viscosity and kinematic viscosity. Dynamic viscosity and kinematic viscosity are connected by the equation dynamic viscosity = kinematic viscosity, where is the density of the fluid. Centipoise is the definition of dynamic viscosity. Kinematic viscosity is measured in centistoke, whereas fluid density is measured in g/cc. One centistoke is determined by dividing one centipoise by one g/cc. Darcy's law uses dynamic viscosity to determine the rate of fluid flow in porous material.
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Car drives uphill at 40 km/h and then back downhill at 60 km/h. what is the average speed for the round trip?
Answer:
48 km/hr
Explanation:
These are often calculated incorrectly because TIME is ignored
time = distance / rate
uphill = d / 40 downhill = d/60
average rate = distance / time
= 2d / ( d/40 + d/60) 2d is uphill + downhill
= 2 / ( 1/40 + 1/60 ) = 48 km/hr
Which objects are found outside of solar systems but not inside it?
Exoplanets are found outside of solar systems but not inside it.
What are exoplanets?A planet outside the Solar System is referred to as an exoplanet or extrasolar planet. In 1917, the first potential sign of an exoplanet was observed, but it was not taken seriously. Exoplanets can be found using a variety of techniques. The majority of exoplanets have been discovered using transit photometry and Doppler spectroscopy, but these techniques suffer from a glaring observational bias that favors the discovery of planets close to the star; as a result, 85% of exoplanets discovered are located within the tidal locking zone. Multiple planets have been seen around a star in many instances. There is a "Earth-sized" planet in the habitable zone for about 1 in 5 Sun-like stars.Learn more about the Exoplanets with the help of the given link:
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If an astronaut goes on a space walk outside the space station, she will quickly float away from the station unless she has a tether holding her to the station. True or false?.
Answer:
True
Explanation:
Very simple, if the tether aint holding her, what is?
23.6cm= what in meters
Explanation
23.6/100= 0.236
Answer:
Use the table below to answer questions 5-6.
Answer:
its also difficult for me.
Which element, inductor or capacitor, releases its stored energy before it is removed from the circuit?
Inductor releases its stored energy before it is removed from the circuit.
What is an inductor?A passive two-terminal electrical device known as an inductor, also known as a coil, choke, or reactor, stores energy in a magnetic field as electric current passes through it. Typically, an inductor is made out of insulated wire twisted into a coil. According to Faraday's law of induction, the time-varying magnetic field generates an electromotive force (e.m.f.) (voltage) in the conductor as the current through the coil varies. Lenz's law states that the induced voltage has an opposing polarity (direction) to the change in current that caused it. Inductors so reject any changes in the current flowing through them.Inductance, which is the ratio of voltage to current change rate, is a property of inductors.To know more about inductors, refer:
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Which planet in the solar system has not been examined by spacecraft instruments that have either flown by or orbited them?.
You can't get one over on me; spacecraft have traveled to every planet in our solar system.
What does a spacecraft require and how is it created?In addition to science instruments, a spaceship has a number of crucial parts, including an engine, power subsystem, steering system, and communications system. The payload module is where the science instruments are located, while the service module houses the majority of these systems.The most common composite material used for spacecraft structures is graphite-epoxy. Graphite fibers embedded in an epoxy matrix provide the structure its strength and rigidity.More and more space applications are utilizing composite materials made of graphite and epoxy. These materials appeal to engineers because of their potential for a zero or almost zero coefficient of thermal expansion and their advantageous mechanical characteristics of high strength/high stiffness to weight ratio.To learn more about spacecraft, visit:
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A bullet brand unknown is fired from the feg p9r pistol. suppose the velocity (at 15 feet) of the bullet us 1,000 feet per second. is the bullet likely to be manufactured by winchester?
No, the bullet is not likely to be manufactured by Winchester.
Given:
X = 936
S=10\ss=10
We are unable to use the empirical rule since we do not know if the distribution is symmetric or skewed.
According to Chebyshev’s rule, which states that at least 89% of the data values are contained within 3 standard deviations of the mean, can be used to help us.
Overline x 3s=936 3(10) = 906 x 3s = 936 3(10) = 906
Overline x +2x = 936 + 3 (10), which becomes x +2x = 936
Thus, between 906 and 966 is the range for at least 89% of the velocities.
Empirical principle approximately 68.3 percent of the values in a data set with a symmetric distribution will be within one standard deviation of the mean, approximately 95.4 percent will be within two standard deviations of the mean, and approximately 99.7 percent will be within three standard deviations of the mean.
Usual values fall within 3 standard deviations of any mean and 1000 does not come within 3 standard deviations of the mean, thus it is unlikely that the bullet with velocity 1000 feet per second was manufactured by Winchester.
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Conceptual, human, and technical skills are important to which managerial level?
Conceptual abilities are essential for top managers, but they are less important for mid-level managers and are not necessary for first-level managers. The value of these talents will increase as we go up the managerial ladder.
What is the difference between basic and technical skills?In general, conceptual abilities refer to the capacity to deal with ideas and concepts. Whereas technical skills are concerned with objects and human skills with people, conceptual skills are concerned with the capacity to work with ideas.
These are intellectual abilities, human abilities, and technological abilities. A manager's conceptual talents enable him or her to see the complete organisation as well as deal with ideas and the links between abstract notions. Human skills, also known as human connection skills, need communication and attention to interpersonal interactions.
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Explain why the properties of polycrystalline materials are most often isotropic?
Most polycrystalline materials consist of randomly arranged crystals or "grains." Although individual grains have different orientations and behave anisotropic ally by themselves that's why the properties of polycrystalline materials are most often isotropic.
What are polycrystalline materials?Polycrystalline materials, or polycrystals, are solids that are made out of numerous crystallites of shifting size and direction. Most materials are polycrystalline, made of countless crystallites kept intact by meager layers of shapeless strong. Most inorganic solids are polycrystalline, including all normal metals, numerous earthenware production, shakes, and ice. The crystallite size can be determined from the full width at half most extreme force (FWHM) estimated on the adjusted diffraction profile. The guideline of crystallite size estimations by x-beam diffraction depends on the way that the Fourier change of various size crystallites shifts contrarily with the size of the crystallite.
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How much heat is required to evaporate 230 lb. of water per hour under a pressure of 111.3 psig, of the water enters the boiler at 190 f?
Heat required to evaporate the water to steam is 5342 KJ
We know that,
[tex]Q_{t}[/tex] = c * m * ( [tex]T_{f}[/tex] - [tex]T_{i}[/tex] )
where,
[tex]Q_{t}[/tex] = Heat required to raise the temperature
c = Specific heat capacity
m = Mass
[tex]T_{f}[/tex] = Final temperature
[tex]T_{i}[/tex] = Initial temperature
Given that,
m = 230 lb = 104.33 kg
[tex]T_{i}[/tex] = 190 F = 87.78 °C
[tex]T_{f}[/tex] = 100 °C (Because water boils at 100 °C to turn into steam)
c = 4190 J / kg °C
[tex]Q_{t}[/tex] = c * m * ( [tex]T_{f}[/tex] - [tex]T_{i}[/tex] )
= 4190 * 104.33 * 12.22
[tex]Q_{t}[/tex] = 5341883.79 J = 5342 KJ
Heat is the amount of energy transferred between two bodies
Therefore, Heat required to evaporate the water to steam is 5342 KJ
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