What magnitude charge creates a 3.20 n/cn/c electric field at a point 3.40 mm away?

The emission power of sun is 3.868 * [tex]10^{26}[/tex] W

We know that,

Energy flux on earth = Emission power of sun / 4 π [tex]r^{2}[/tex]

where,

r = Distance between sun and earth

Given that,

Energy flux on earth = 1368 W / [tex]m^{2}[/tex]

Diameter of sun = 1.39 * [tex]10^{9}[/tex] m

Diameter of earth = 1.27 * [tex]10^{7}[/tex] m

r = 1.5 * [tex]10^{11}[/tex] m

Emission power of sun = 1368 * 4 * 3.14 * ( 1.5 * [tex]10^{11}[/tex] [tex])^{2}[/tex]

                                      = 1368 * 2.828 * [tex]10^{23}[/tex]

Emission power of sun = 3.868 * [tex]10^{26}[/tex] W

Energy flux is the rate of transfer of energy through a surface. The unit of total rate of energy transfer is W = J / s. The unit of specific rate of energy transfer is W / [tex]m^{2}[/tex] = J / [tex]m^{2}[/tex] s

Therefore, The emission power of sun is 3.868 * [tex]10^{26}[/tex] W

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Materials whose constituent particles are bound by Vander waal's type of bond are generally expected to have the lowest melting temperatures

When two atoms are close enough to each other that their outer electron clouds just barely contact, van der Waals interactions take place. This causes charge oscillations that produce a unidirectional, nonspecific attraction.

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A soft drink is a homogeneous mixture.

All of the ingredients in a homogeneous mixture are dispersed equally, and in soft drinks, ingredients including sugar, carbon dioxide, and water combine to produce a single phase. A soft drink is therefore an uniform composition.

A mixture could be homogeneous or heterogeneous.

A mixture refers to a combination of two or more substances that are not chemically combined together. They may be solids, liquids or gases.

A mixture may be composed of substances in the same phase or different phases. If substances are combined in the same phase to form a mixture then the mixture is homogeneous. If substances in different phases combine to give a mixture then the mixture is heterogeneous.

Examples of homogeneous mixtures are salt and water solutions while examples of heterogeneous mixtures are sand and water as well as oil and water.

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In ppm the concentration of NH2- ions is 5.6 ppm.

We have 1 L sample of water contains 0.0056 g of NH2- ions.

We have to determine the concentration of NH2- ions in ppm.

PPM is a term used in chemistry to denote a very, very low concentration of a solution.

According to the question -

Mass of the aqueous solution of NH2- ions → density x volume →

1 L x 1000 mL x 1 g/mL = 1000g

Now, the ratio of chloride ion mass to the solution mass will give the concentration of NH2- ions →

c = 0.0056/1000

Now, in order to express the concentration in parts per million -

c = (0.0056/0.001 x 10⁶) = 5.6/10⁶

Now -

c = 5.6 g of NH2- ions per 1 million grams of solution which is equal to concentration in ppm.

Hence, in ppm the concentration of NH2- ions is 5.6 ppm.

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By using Hooke's Law, the force constant is 4 x 10⁶ N/m.

We need to know about Hooke's Law to solve this problem. Hooke's Law describes the force applied to spring (elastic materials) will proportional to spring constant and displacement under the elastic condition. It can be described as

F = k . x

where F is force, k is spring constant and x is displacement.

The potential energy of spring can be determined as

PE = 1/2 . k . x²

where PE is potential energy

From the question above, we know that

x = 5 mm = 0.005 m

PE = 50 joule

By substituting the given parameter, we can calculate the force constant of the wire

PE = 1/2 . k . x²

50 = 1/2 . k . (0.005)²

k = 4 x 10⁶ N/m

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Answer:

The friction between the crate and the floor is the same amount as your pushing force when you push a crate across a level floor at constant velocity.

Explanation:

Remember that the force produced by two surfaces coming into contact and sliding against one another is frictional force. This is expressed by the direct relationship between frictional force and normal force.

f=μN

Where

f = frictional force

µ = coefficient of friction

N = Normal force

By dry friction, two solid surfaces in touch are opposed to one another's relative lateral motion. Dry friction is further separated into kinetic friction between moving surfaces and static friction (sometimes known as "stiction") between non-moving surfaces. Additionally, dry friction is typically caused by the interaction of surface characteristics, particularly rough surfaces.

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Musical notation is the term used to describe the common system of signs used to denote the relative duration of long and short sounds.

Music notation, often known as musical notation, is any technique used to graphically express audibly perceived music performed with instruments or sung by a human voice using written, printed, or other symbol-based representations. This includes notation for periods of silence like rests.

Throughout history, many civilizations have used different types of notation, and the knowledge of early musical notation is generally sparse. Different musical genres and cultural groups employ various methods of music notation, even during the same time period, such as the 2010s. For instance, while sheet music with staves and note-heads is the most popular method for professional classical musicians, the Nashville Number System is the main method used by professional country music session musicians.

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Answer:

D) diatomic

Explanation:

Diatomic elements form molecules with two atoms together.

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The speed is obtained as 3.3  * 10^9  miles per hour.

There are several units of speed. Let us recall that speed is the ratio of the distance covered to the time taken. The speed of light is given as 3 * 10^8 m/s.

Now we have the speed as warp 1.71 which corresponds to five times the speed of light.

Thus the speed is 5(3 * 10^8 m/s) = 1.5 * 10^9 m/s

To convert from m/s to miles per hour';

1 meter/second = 2.2 miles per hour

1.5 * 10^9 meter/second=  1.5 * 10^9 meter/second * 2.2 miles per hour/1 meter/second

= 3.3  * 10^9  miles per hour

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By using ideal gas approximation, the final pressure is 9.6 atm.

We need to know about ideal gas to solve this problem. The ideal gas will follow the rule

P . V = n . R . T

where P is pressure, V is volume, n is the amount of substance, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.

In the isochoric process where the initial and final volume is the same, the temperature and pressure will follow the rule

P1/T1 = P2/T2

where P1 is initial pressure, P2 is final pressure, T1 is initial temperature and T2 is final temperature. (Temperature in Kelvin)

From the question above, we know that:

P1 = 5.0 atm

T1 = 76°C = 349 K

T2 = 399°C = 672 K

By substituting the parameters, we get

P1/T1 = P2/T2

5.0/349 = P2/672

P2 = 9.6 atm

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For electron in 1st excited state of H the energy range for range 2 is 1.9eV-3.4eV

The excited state of an atom is typically not the most stable state. There is a chance that an electron will drop spontaneously from one excited state to one with a lower (more negative) energy level. An electron releases the extra energy, which is positive, when it moves from one level to another by emitting a photon

The various groups are

1)Range 1: 0eV to 1.8eV

2)Range 2: 1.9eV to 2.4eV

3)Range 2:>3.5eV

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If you exert force on an inanimate item, you will also be able to calculate the force that the object will apply to you, which will be opposing and equal to your own.

In order to accelerate a heavier (more massive) item in motion, more force must be exerted. When two objects are subjected to the same force, the smaller mass item will change speeds more quickly.

An item can alter its size or shape, begin moving, stop moving, accelerate, or decelerate as a result of a force acting on it. When two things contact, they exert pressures on one another that are identical in size but directed in the opposite direction

The action-reaction law is another name for this rule.

When just one body decides the strength and direction of the force, the force that body exerts is referred to as the "action," and the force that the other body exerts in a similar but opposite direction is referred to as the "reaction."

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A distance of 20 m is greater than a single displacement of 14.14 m that connects the same starting and ending point.

The displacement of the sequence is calculated as follows;

Δx = √[(x₂ - x₁)² + (y₂ - y₁)²]

Δx = √[(-5 - 5)² + (-5 - 5)²]

Δx = 14.14 m

Thus, we can conclude that a distance of 20 m is greater than a single displacement of 14.14 m that connects the same starting and ending point.

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The maximum speed of the donkey is 10.72m/s

The question is based on the principle of motion in one dimension and hence formulas of motion in one dimension can be applied.

It is given that donkey attains an acceleration of 1.6 m/s^2

The time taken to accelerate  to given speed is 6.7 seconds

We use the formula v=u + at to find the fastest speed

v is the final or maximum speed

u is the initial speed which in this case is 0 as the donkey is at rest

a is the acceleration of the donkey

t is  the time taken in seconds

v = u + at

v= 0 + 1.6 x 6.7

 = 10.72 m/s

Hence the donkey obtains the speed of 10.72 m/s

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Water has the maximum specific heat capacity of any fluid.

The amount of heat that one gram of a material needs either absorb or lose in order to alter its temperature by a degree Celsius is known as specific heat. This equates to one caloric, or 4.184 Joules, for water.

Although the hydrogen bonds in water are much too weak to be compared to intra - molecular bonds like covalently or ionic bonds, they are nevertheless strong enough to require a lot of energy to break. Water boils at 100°C for this reason.

Many people believe hydrogen bonding is the cause of water's high specific heat.

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The correct answer is Oxygen (65%) Carbon (18.5%) Hydrogen (9.5%) Nitrogen (3.2%).

Oxygen (O) - 65% - Oxygen and hydrogen combine to make water, which serves as the body's main solvent and a mechanism for controlling temperature and osmotic pressure. Numerous important chemical molecules include oxygen.

With four bonding sites for other atoms, carbon (C), which accounts up 18.5% of the composition, is the important atom in organic chemistry. Proteins, nucleic acids, carbohydrates, and lipids are all composed of carbon chains. Bonds made of carbon may be ruptured to release energy.

Hydrogen (H) - 9.5% - All organic compounds and water both include hydrogen.

Nitrogen (N) - 3.2% The nucleic acids that make up the genetic code and proteins both include nitrogen.

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The mass percent composition of aluminum is 52.9% in aluminum oxide.

Mass of the aluminum = 3.53 g

Mass of the aluminum oxide = 6.67 g.

The mass percent of a substance is the mass of the substance divided by the mass of the compound into 100.

Aluminum reacts with oxygen to form aluminum oxide.

The overall balanced equation for the reaction is,

[tex]Aluminum + Oxygen→Aluminum \: oxygen[/tex]

[tex]4Al +3O _{2}→2Al _{2}O _{3}[/tex]

The mass percent composition of aluminum in the aluminum oxide is,

[tex]Mass \: percent = \frac{ Mass \: of \: the \: substance}{ Mass \: of \: the \: compound} \times 100 [/tex]

[tex]Mass \: percent = \frac{Mass \: of \: the \: aluminum}{ Mass \: of \: the \: aluminum \: oxide } \times 100[/tex]

[tex]Mass \: percent = \frac{3.53}{6.67 } \times 100 [/tex]

= 52.9 %

Therefore, the mass percent composition of aluminum is 52.9% in aluminum oxide.

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The composition in atom percent of an alloy that consists of 92.5 wt. g and 7.5 wtu is 12 %

Silver's atomic weight = 107.87 gm / mol

Weight in atoms of copper = 63.55  gm / mol

Percentage of silver weight =-92.5 %

Percentage of copper = 7.5 %

Percent composition of silver =

Weight of silver * weight of copper / percent of silver * weight of Copper + percent of copper * weight of silver     *100

= 92.5 * 63.55 / 92.5 *  63.55 + 7.55 *107.87  *100

= 87.9%

Percent composition of copper =

Percent of copper * weight of silver / percent of silver * weight of Copper + percent of copper * weight of silver     *100

=7 .5 * 63.55 / 92.5 *  63.55 + 7.55 *107.87  *100

=12.1 %

This statement is False.

Atomic mass (sometimes known as atomic weight, however this term is erroneous because the mass is a property of the body while the weight depends on gravity) is the mass of an atom that corresponds to a certain chemical element. Typically, the uma (u) is employed as a unit of measurement. where u.m.a. stands for "unit of atomic mass." In honor of the English chemist John Dalton, this unit is also frequently referred to as the Dalton (Da). The Dalton is equal to one-twelfth of the mass of the carbon-12 nucleus, the most common isotope of carbon. It roughly equates to the mass of a proton (or a hydrogen atom). It is referred to as "uma," while "amu" is also its English abbreviation (Atomic Mass Unit). However, The suggested character is "u".

The weighted average of the masses of each isotope of each chemical element, which takes into account their relative abundance, is typically used to calculate the atomic masses of the chemical elements. This is what accounts for the discrepancy between an element's atomic mass in umas and the number of nucleons that contain the nucleus of its most prevalent isotope.

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Switched Circuit: This type of connection only maintains a dedicated physical circuit or path between two network nodes for the duration of the connection before data may be transmitted.

A circuit in electronics is a complete circular channel via which electricity flows. A current source, conductors, and a load make up a straightforward circuit. The term circuit can be used in a broad sense to refer to any permanent path that energy, data or a signal can go through.

Circuits can be divided into three categories: series, parallel, and series-parallel. The typical configuration of a single electrical circuit includes one or more resistance or load devices.

The closed loop in which electricity can move is referred to as a circuit. Electricity can flow in a closed circuit without interruption from the power source through the conductor or wire to the load before returning to the ground or power source.

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The population after seven days will be p(7) = 5 [tex]$e^{7k} }[/tex].

We have the following function -

p(t) = 5 [tex]$e^{tk} }[/tex]

We have to determine the total population after 7 days.

In general, growth rate is the measurement of how fast something increases in size during a particular period.

According to the question, we have -

p(t) = 5 [tex]$e^{tk} }[/tex]

Now -

for t = 7 -

p(7) = 5 [tex]$e^{7k} }[/tex]

where k is growth rate.

Hence, the population after seven days will be p(7) = 5 [tex]$e^{7k} }[/tex].

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v₀= 2.83478394238 is its initial velocity v₀ as it leaves the ground.

The rate at which an object's position changes when observed from a specific point of view and when measured against a specific unit of time is known as its velocity.

The equation v = s/t denotes the vector variable velocity (v), which quantifies movement (or change in location, s), over change in time (t).. Speed (or rate, r) is a scalar number that represents the amount of time (t) spent traveling in relation to the amount of distance (d), as shown by the equation r = d/t.

Maximum Height h= 0.410 m

acceleration g= 9.80 m/s² down

let initial speed is Vo.

At maximum height final speed of flea is zero.

From kinematic equation,

v² = v₀² + 2as

0² = v₀² - 2gh

v₀² = 2gh

v₀= [tex]\sqrt{2gh}[/tex]

v₀= [tex]\sqrt{2*9.8*0.41}[/tex]

v₀= 2.83478394238.

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According to the first rule of motion, an object's motion will not alter unless there is a force acting on it.

According to the second law of motion, the amount of force exerted on an object is proportional to the product of the object's mass and its acceleration.

According to the third law, when two things interact with one other, the forces that they apply to each other are of equal magnitude but in opposing directions.

This is further explained below.

Generally, Isaac Newton, as he was formally known, was an English physicist and mathematician who was the leading light of the 17th century's Scientific Revolution. 

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Answer:

look it up

Explanation:

A generic protein comprising 387 amino acid residues will have an estimated molecular mass estimate of 42570 daltons.

Large biomolecules and macromolecules known as proteins are made up of one or more extended chains of amino acid residues. Proteins play a variety of roles in living things, including accelerating metabolic reactions, reproducing DNA, responding to stimuli, providing cells and organisms structure, and transporting chemicals. A linear chain of amino acid residues is referred to as a polypeptide. Proteins differ from one another primarily in their amino acid sequence, which is determined by the nucleotide sequence of their genes and typically results in protein folding into a specific 3D structure that determines its activity. At least one lengthy polypeptide is present in every protein.

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Astronomers typically use filters that exclusively transmit light from a specific narrow band of wavelengths to measure a star's apparent brightness in order to determine the precise color of a star (colors).

Around 0.001 magnitude of starlight may be measured with accuracy by photoelectric photometers. The method of surface photometry, which gauges apparent magnitude in magnitudes per square arcsecond, can also be applied to extended objects like planets, comets, nebulae, and galaxies. The varied hues are caused by the light's estimated blackbody radiation, which is more sensitive to the star's temperature than to the specifics of its composition. As a result, astronomers can gauge a star's surface temperature by observing its hue.

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The correct answer is centrifuge.

Your complete blood is drawn out during an apheresis procedure, which is used to donate platelets. Your blood is spun in a centrifuge to separate your plasma, platelets, and red blood cells. As the blood is divided, the heavier reds cells drop to the bottom and are given back to you.

Between the liquid plasma and the platelets that are tracked into a small pouch that is wrapped around the centrifuge cylinder as the liquid plasma rises. When you donate blood, your spleen releases stockpiled platelets into your bloodstream in an effort to stop the bleeding.

As a result, more platelets and plasma are collected, enabling you to donate one, two, or even three doses of platelets in a single visit. Your healthy bone marrow quickly starts producing additional platelets from stem cells to replace those that have been given while this is happening.

Since only one donor is used for the donation, platelet donors are able to provide patients with a greater amount and higher-quality platelets to aid in their fight for survival.

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The work w (in j) done by the force in moving an object is 222.4 J

We know that,

[tex]M_{n}[/tex] = ∑[tex]_{i = 1}^{n}[/tex] f ([tex]m_{i}[/tex] ) Δ

where,

i = [tex]i^{th}[/tex] rectangle

n = Number of rectangles

f ([tex]m_{i}[/tex] ) = Function of the curve evaluated at the midpoint of the [tex]i^{th}[/tex]   rectangle

[tex]m_{i}[/tex] = Midpoint of [tex]i^{th}[/tex] interval

Δ = Width of each rectangle

Given that,

x     5    9    13     17   21   25  29   33   37

f(x)  5  5.5  6.8  8.8  9.8  8.1  6.7  5.4  4.2

n = 4

Δ = ( 37 - 5 ) / 4

Δ = 8

∫[tex]_{5} ^{37}[/tex] f (x) dx = ∑[tex]_{i = 1}^{4}[/tex] f ([tex]m_{i}[/tex] ) Δ

∑[tex]_{i = 1}^{4}[/tex] f ([tex]m_{i}[/tex] ) Δ = 8 ( 5.5 +8.8 + 8.1 + 5.4 )

∑[tex]_{i = 1}^{4}[/tex] f ([tex]m_{i}[/tex] ) Δ = 222.4

∫[tex]_{5} ^{37}[/tex] f (x) dx = 222.4 J

The midpoint rule, also known as the midpoint Riemann sum is used to estimate integral of a function or area under a curve.

Therefore, the work w (in j) done by the force in moving an object is 222.4 J

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Humans convert approximately 40% of the energy stored in food to useful work

Humans can store about 40% of the energy from the food consumed due to the conversion of energy from food through the metabolic process (metabolism).

The other 60% of the energy it is used to maintain the normal function of the body and the other activities that involve physical and mental activities

The energy storage is a reserve of energy that we can use in really difficult situation when the body is with no energy.

The processes of a chemical or physical nature by which the human body converts or uses energy.

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Whenever you wish to bring an object into focus under high power, the correct order of steps are as listed below:

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.

In Science, there are different types of microscope used for magnifying an object and these include the following:

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.

Ratio of the no. of turns in primary coil to the no. of turns in the secondary coil is 1:2

Transformer -

A device used in the power transmission of electric power.

It is commonly used  to increase or decrease the supply voltage without changing the frequency of AC b/w circuit.

In simple word transformer is a thing that steps up or steps down voltage.

In step up transformer-

The output voltage is increased.

The secondary output voltage is higher that primary voltage.

In step down transformer-

The output voltage is decreased.

These are used to convert the high voltage primary supply to low voltage secondary output.

In step up transformer

N₁/N₂= V2/V₁= I₁/I₂ (equation 1.)

A ideal step up transformer double the primary voltage

Then Vs = 2 Vp

Using in equation 1. We get

Vp/Vs = N1/N2

Vp/2Vp = N1/N2

N1/N2 = 1/2

N1 : N2 = 1:2

Ratio of the no. of turns in primary coil to the no. of turns in the secondary coil is 1:2

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