Will a beam of light that is, at first, in air and oriented perpendicular to the surface of a body of water be deflected as a result of the transition into water?.

Answers

Answer 1

It does not deflect, the light's direction will not change

When a light ray is incident from a medium such as air onto a more dense medium such as glass or water, the refracted ray always lies closer to the perpendicular than does the incident ray.

What happen when light ray passes from one medium to another ?

Refraction occurs when light travels from one medium to another which changes the speed at which the light travels. This causes light to bend upon incidence with the interface of a new material.

The frequency of the light ray remains same when it travels from one medium to another because it depends on the source of light. But the wavelength and speed vary because they depend on the medium through which the light passes.

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Related Questions

What is the relationship between acceleration and time a(t) for the model rocket (v(t)=αt3 βt γ, where α=−3. 0m/s4, β=36m/s2, and γ=1. 0m/s)?

Answers

The relationship between acceleration and time a(t) for the model rocket v(t)=αt³ + βt + γ, where α=−3. 0m/s4, β=36m/s2, and γ=1. 0m/s is a(t) = -9t² + 36 m/s²

The differentiation of velocity with respect to time gives acceleration.

Velocity of a rocket model is the speed acquired of the body in a particular direction.

Acceleration of the body is the change in velocity with respect to time.

v(t)=αt³ + βt + γ

On differentiating,

a = 3αt² + β

Given, α=−3. 0m/s⁴

           β=36m/s²

            γ=1. 0m/s

On subsituting,

                 a = 3(-3)t² + 36 m/s²

Hence, relationship between acceleration and time a(t) = -9t² + 36 m/s²

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Help on this physics question

Answers

By using the equations for parabolic motion, we proceed to present the answers for the paragraph seen in the picture: a) t ≈ 0.553 s, b) s = 2.212 m, c) s = 11.060 m.

How to analyze a system on parabolic motion

A system is on parabolic motion if such system can be represented as a particle, that is, a system whose geometry is negligible, and its motion is a combination of horizontal movement at constant velocity and vertical uniformly accelerated movement due to gravity and all viscous and rotational effects are negligible.

The time required for the droplet to reach the ground is:

1.5 m = (1 / 2) · (9.807 m / s²) · t²

t = √[2 · (1.5 m) / (9.807 m / s²)]

t ≈ 0.553 s

And the horizontal distance traveled by the droplet is:

s = (4 m / s) · (0.553 s)

s = 2.212 m

Now, we apply the same procedure for the case of sneezing person:

1.5 m = (1 / 2) · (9.807 m / s²) · t²

t = √[2 · (1.5 m) / (9.807 m / s²)]

t ≈ 0.553 s

s = (20 m / s) · (0.553 s)

s = 11.060 m

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How does the value of gravitational
acceleration change when the distance
from the centre of the Earth increases?

Answers

Explanation:

according to my understanding, the value of gravitational acceleration changes because;different planets have different gravitational pull.

for example you may ask yourself why is it that the gravitational acceleration is not the same on earth and the moon.

this is because the gravitational force acting on an object on earth is greater than the gravitational force acting on an object and the Moon .

You know the moon is located in the space and one can fly, stand,dance etc.

all because the gravitational acceleration is low.

as for me when the distance from the centre of the Earth increases,

the gravitational acceleration decreases.

A good example is given by the moon.

The moon is miles away from the Earth and its gravitational acceleration is quite low .hope you got me.

Consider the previous question. which has the greater acceleration: the bug or the windshield?

Answers

The bug has the greater acceleration because it has the smaller mass

The bug has a greater change in velocity (acceleration) due to experiencing equal force as a much smaller mass.

What is Acceleration ?

The rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.

An object's velocity can alter depending on whether it moves faster or slower or in a different direction. A falling apple, the moon orbiting the earth, and a car stopped at a stop sign are a few instances of acceleration.

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What is meant by a "chain reaction"?

Answers

A b c d e f g h i j k l m n o p q r s t u v w x y z

When current flow tries to decrease in an inductor, the magnetic field ________ and the voltage polarity across the inductor ________.

Answers

When current flow tries to decrease in an inductor, the magnetic field collapses and the voltage polarity across the inductor reverses

The associated magnetic flux also decreases, it then induces an e m f across the inductor, the sense of which is to assist the decreasing current.

Faraday's law of induction (to distinguish it from his laws of electrolysis), states that the magnitude of the emf induced in a circuit is proportional to the rate of change with time t of the magnetic flux Φ that cuts across the circuit:

emf = −dΦ/dt

Lenz's law, in electromagnetism, statement that an induced electric current flows in a direction such that the current opposes the change that induced it.

When the current flowing through the coil changes, the time-varying magnetic field induces an electromotive force (e.m.f) in the conductor, described by Faraday's law of induction.

According to Lenz's law, the induced voltage has a polarity (direction) which opposes the change in current that created it. As a result, inductors oppose any changes in current through them. Hence , polarity across the inductor got reversed

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HELP PLS I WILL MARK U BRAINLIEST!!

Answers

Answer:

D

Explanation:

I would say much too small as there is a significant portion of the plant that is UNDER water.....

    (  Really depends on how deep the water is...if it is shallow water it would be just a little too small)

Physics question (All the filled in parts are correct) Please help and include explanation with answer. Thanks!

Answers

The horizontal distance covered by this water slide is equal to 13.23 meters.The angle formed between the water slide and the horizontal plane is equal to 48.59°.The magnitude of Eric's weight is equal to 392 Newton.The magnitude of the normal force Eric receives from the water slide is equal to 258.72 Newton.The magnitude of the normal force Eric gives from the water slide is equal to 258.72 Newton.The magnitude of his gravitational force's component parallel to the water slide is equal to 294 Newton.Eric's acceleration is equal to 6.70 m/s².Eric's speed is equal to 16.37 m/s.At least, the superman has to apply a force of 133.28 Newton.

How to determine the horizontal distance?

Based on the information provided, we can infer and logically deduce the following salient points and parameters:

Height of water slide (Adjacent) = 15.0 meters.Length of water slide (Hypotenuse) = 20.0 meters.

This ultimately implies that, the horizontal distance covered by this water slide represents the opposite side of a right-angled triangle and as such we would apply Pythagorean theorem.

Mathematically, Pythagorean theorem is given by this formula:

c² = a² + b²

Where:

h is the hypotenuse of a right-angled triangle.a is the adjacent side of a right-angled triangle.b is the opposite side of a right-angled triangle.

Substituting the given parameters into the formula, we have;

20.0² = 15.0² + b²

b² = 20.0² - 15.0²

b² = 400.0 - 225.0

b² = 175.0

b = √175.0

b = 13.23 meters.

Thus, we would apply sine trigonometry to determine the magnitude of the first complimentary angle (θ₁) formed by this right-angled triangle:

Sinθ₁ = Opp/Hyp

Sinθ₁ = 13.23/20.0

Sinθ₁ = 0.6615

θ₁ = sin⁻¹(0.6615)

θ₁ = 41.41°.

How to calculate the angle?

We know that θ is the angle formed between the water slide and the horizontal plane. Thus, we would determine the magnitude of this second complimentary angle (θ₂):

θ = θ₁ + θ₂

90° = 41.41° + θ₂

θ₂ = 90° - 41.41°

θ₂ = 48.59°.

From the above, we have:

Sinθ₂ = Sin(48.59) = 0.75.

Cosθ₂ = Cos(48.59) = 0.66.

Tanθ₂ = Tan(48.59) = 1.134.

How to determine the magnitude of Eric's weight?

Mathematically, the weight of a physical body (object) can be calculated by using this formula:

Weight = mg

Weight = mass × acceleration due to gravity

Weight = 40.0 × 9.8

Weight = 392 Newton.

How to determine the magnitude of the normal force?

Mathematically, the magnitude of the normal force Eric receives from the water slide is given by:

Normal force = mgcosθ

Normal force = 40.0 × 9.8 × cos(48.59)

Normal force = 392 × 0.66

Normal force = 258.72 Newton.

How to determine the magnitude of the normal force?

Mathematically, the magnitude of the normal force Eric gives the water slide is given by:

Normal force, Fₙ = mgcosθ

Normal force, Fₙ = 40.0 × 9.8 × cos(48.59)

Normal force, Fₙ = 392 × 0.66

Normal force, Fₙ = 258.72 Newton.

How to determine the gravitational force component?

Mathematically, the magnitude of his gravitational force's component parallel to the water slide is given by:

F = Wsinθ = mgsinθ

F = 40.0 × 9.8 × sin(48.59)

F = 392 × 0.75

F = 294 Newton.

How to calculate the friction force?

Mathematically, the magnitude of the friction force between Eric and the water slide is given by:

Fs = μ_s(Fₙ)

Fs = 0.10 x 258.72 N

Fs = 25.872 Newton.

How to calculate Eric's acceleration?

First of all, we would determine the net force acting on Eric?

F(net) = F - Fs

F(net) = 294 - 25.872

F(net) = 268.13 Newton.

From Newton's second law of motion, acceleration is given by this formula:

Acceleration = Net force/Mass

Acceleration = 268.13/40.0

Acceleration = 6.70 m/s².

How to calculate Eric's speed?

In this scenario, we would calculate Eric's speed by using the third equation of motion:

V² = U² + 2aS

V² = 0² + 2(6.70)(20.0)

V² = 268

V = √268

V = 16.37 m/s.

At least, the superman has to apply the following force to prevent Emily from sliding:

Force = Weight - Normal force

Force = 392 - 258.72

Force = 133.28 Newton.

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Which of the following is not an EM wave?
A. Microwave
B. Visible light
C. X-rays
D. Sound

Answers

Answer:

D.  Sound

Explanation:

Waves: one of the ways that energy may be transferred. Waves can be described as oscillations.

Electromagnetic (EM) waves are transverse waves.

EM waves can be separated into seven groups in the spectrum.  From long wavelength to short wavelength:

Radio wavesMicrowavesInfraredVisible lightUltravioletX-raysGamma rays

Sound waves are longitudinal waves.

The direction of oscillations is different between longitudinal and transverse waves:

Longitudinal waves: the vibrations are parallel to the direction of wave travel. Transverse waves: the vibrations are at right angles to the direction of wave travel.

Answer:

Sound

Explanation:

EN waves are known as electromagnetic waves

They can be identified from the electromagnetic spectrum

They are divided into seven parts

MicrowavesRadiowavesVisible lightX-raysUV raysGamma raysInfrared

We can only watch Visible light not others .

Sound is not transverse wave

Why do the lighter isotopes disappear first from the atmosphere? Where do those isotopes go?

Answers

Lighter molecules move fast and escape from the upper atmosphere relatively quickly.

To find the answer, we have to know more about the lighter isotopes.

What are lighter isotopes?Lighter molecules are mobile and soon leave the higher atmosphere.A particular element's stable isotopes have slightly different atomic masses and quantum mechanical energies.The lighter isotope of an element's chemical bonds are more easily broken than the heavier isotope's. As a result, the light isotope typically benefits from chemical reactions.

Thus, we can conclude that, lighter molecules move fast and escape from the upper atmosphere relatively quickly.

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The air pressure within a container is inversely related to the volume of the container. thus, as the volume of the container ______, the pressure of the air within it _

Answers

Decreases, increases

As the volume of the container decreases, the pressure of the air within it increases.

When the temperature is held constant, pressure decreases as volume increases and vice versa.

What is the relation between pressure and volume ?

The amount of force delivered perpendicularly to an object's surface in relation to its area is known as pressure. Its abbreviation is "p" or "P."

Volume is a three-dimensional measurement that's used to gauge a solid shape's capacity. It implies that the volume of a closed form determines how much space it can occupy in three dimensions.When T and n are constants, the relationship between a gas's pressure and volume is inverse. The volume V decreases as the pressure P rises. As long as T and n stay constant, the product P x V is constant.

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What is (a) the wavenumber and (b) the wavelength of the radiation used by an fm radio transmitter broadcasting at 92. 0 mhz?

Answers

The wavenumber and (b) the wavelength of the radiation used by an fm radio transmitter broadcasting at 92. 0 mhz will be  31.25 * [tex]10^{2}[/tex] [tex]m^{-1}[/tex] and 0.032 * [tex]10^{2}[/tex] m respectively

Forms of electromagnetic radiation like radio waves, light waves or infrared (heat) waves make characteristic patterns as they travel through space. Each wave has a certain shape and length. The distance between peaks (high points) is called wavelength.

Wavenumber, also called wave number, a unit of frequency, often used in atomic, molecular, and nuclear spectroscopy, equal to the true frequency divided by the speed of the wave and thus equal to the number of waves in a unit distance.

wavelength = ?

frequency = 92 m Hz = 92 * [tex]10^{6}[/tex] Hz

speed of light = 3 * [tex]10^{8}[/tex] m/s

speed of light = frequency * wavelength

wavelength = speed of light  / frequency

                     = 3 * [tex]10^{8}[/tex]  / 92 * [tex]10^{6}[/tex]

                     = 0.032 * [tex]10^{2}[/tex] m

wavenumber = 1 / wavelength

                      = 1 / 0.032 * [tex]10^{2}[/tex] m

                      = 31.25 * [tex]10^{2}[/tex] [tex]m^{-1}[/tex]

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Are there components of the velocity that are not determined by the measurement of the force?.

Answers

Are there components of the velocity that are not determined by the measurement of the force?. Yes

What are components of velocity?

Due to the possibility of velocities pointing diagonally, two-dimensional motion is more complicated than one-dimensional motion. A baseball, for instance, could be going diagonally while also moving both horizontally and vertically. To make our calculations simpler, we divide the velocity vector of the baseball into two independent horizontal start subscript and end subscript directions.

It is challenging to attempt to solve for both the horizontal and vertical directions of a baseball in a single equation; it is preferable to use a divide-and-conquer strategy.

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What are the factor affecting the moment of force

Answers

Answer:

distance and the amount of the force

Explanation:

moment = f x d

The ____ rate, measured in kilohertz (khz), refers to the amount of samples obtained per second during the conversion from analog to digital sound.

Answers

Sampling rate

Kilohertz, abbreviated as kHz, is a unit of frequency, or cycles per second.

This statistic in digital audio refers to the number of data chunks required each second to digitally represent an analogue sound. The sample rate or sampling frequency refers to these data units.

What is Sampling rate ?

The sample rate is the number of sound samples that are taken per second to represent an event digitally while creating audio for computers or telecommunication.

The digital representation of the sound can be more accurate the more samples captured per second.

The ideal sample rate to choose is 44.1 kHz for the majority of music applications. When producing music or other audio for video, 48 kHz is typical.

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The density of silver is 10. 5 g/cm 3. a piece of silver with a mass of 61. 3 g would occupy a volume of __________ cm 3

Answers

Answer:5,84 cm³Explanation:

_______________

ρ=10,5 g/cm³

m=61,3 g

_______________

V - ?

_______________

[tex]\displaystyle \boldsymbol{V}=\frac{m}{\rho} =\frac{61,3 \; g}{10,5\; \frac{g}{cm^3} } \approx \boldsymbol{5,84 \; cm^3}[/tex]

A beaker was weighed on an electronic balance. the display showed 56. 078 grams. what mass should you record for the empty beaker?

Answers

Answer:

56.18 grams because you have to round it off

A 5. 0-c charge is 10 m from a small test charge. what is the magnitude of the force experienced by a 1. 0 nc charge placed at the location of the test charge?

Answers

The magnitude of the force experienced by a 1. 0 c charge placed at the location of the test charge is 4.5*10^8N.

To find the answer, we have to know more about the force experienced between two charges.

How to find the force experienced between two charges?It is given that,

                [tex]Q_1=5C\\Q_2=1C\\r=10m.[/tex]

We have to find the force experienced between two charges,

               [tex]F=\frac{kQ_1Q_2}{r^2}[/tex]

where, k=8.99*10^9.

Thus, by substitution, the force will be,

          [tex]F=\frac{8.99*10^9*5*1}{10^2} =4.5*10^8N[/tex]

Thus, we can conclude that, the magnitude of the force experienced by a 1. 0 c charge placed at the location of the test charge is 4.5*10^8N.

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What are the similarities between the compass needle (magnetism) and a charge to probe the electric field (electricity)?

Answers

Similarities between the compass needle (magnetism) and a charge to probe the electric field (electricity) is that Electric fields are produced by two kinds of charges, positive and negative similarly Magnetic fields are associated with two magnetic poles

Magnetic Field is the region around a magnetic material or a moving electric charge within which the force of magnetism acts. A pictorial representation of the magnetic field which describes how a magnetic force is distributed within and around a magnetic material.

Electric field, an electric property associated with each point in space when charge is present in any form. The magnitude and direction of the electric field are expressed by the value of E, called electric field strength or electric field intensity or simply the electric field.

Electric fields are produced by two kinds of charges, positive and negative. Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges).

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Help pls this aint physics.

Answers

Answer:

Human beings can see "visible" light.

Visible light is considered to be between 4000-7000 Angstroms or

400-700 millimicrons

1 Angstron = 1E-10 m

1 Millimicron = 10 Angstroms

What is the maximum speed you can be traveling to stop before hitting a child that runs into the street 60-65 feet ahead of your car

Answers

The fastest you could slow down before hitting a youngster who rushed into the road 60 to 65 feet in front of your car is 20 mph.

(Perception/Reaction Distance)

Speed 30 mph 40 mph 50 mph 60 mph 70 mph 80 mph

Distance 44 feet 59 feet 73 feet 88 feet 103 feet 117 feet

Braking Distance 45  feet 80  feet 125  feet 180  feet 245  feet 320 feet

Overall Stopping Distance 89 feet 139 feet 198 feet 268 feet 348 feet 439 feet

Equal to Approximate Number of Car Lengths 6 9 14 18 23 29

Take note that your total stopping distance triples when you double your speed, say from 30 mph to 60 mph or 40 mph to 80 mph.

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You could only brake down to 20 mph before hitting a child who dashed into the road 60 to 65 feet in front of your vehicle.

(Perception/Reaction Distance)

Speed 30, 40, 50, 60, 70, and 80 mph

Distance Braking Distance: 45 feet 80 feet 125 feet 180 feet 245 feet 320 feet 44 feet 59 feet 73 feet 88 feet 103 feet 117 feet

The total stopping distance is about equal to the number of car lengths: 89 feet, 139 feet, 198 feet, 268 feet, 348 feet, and 439 feet. 6 9 14 18 23 29

Be aware that as you double your speed, such as from 30 mph to 60 mph or 40 mph to 80 mph, your total stopping distance triples.

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Select all the correct answers. which three forms of light are invisible light? blue light infrared rays radio waves red light x-rays

Answers

Infrared rays, radio waves, and x-rays are the three kinds of light that are invisible to human vision.

What is a visible spectrum?

The region of the electromagnetic spectrum that the human eye can see is known as the visible light spectrum. This group of wavelengths is most commonly referred to as visible light. The range of wavelengths that the human eye can typically see is from 380 to 700 nanometers.

Example of visible spectrum is visible light.

Examples of invisible light are;

Infrared raysRadio wavesx - rays

Thus, the three forms of light that are invisible light or invisible to human eyes are Infrared rays, Radio waves and x - rays.

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What are the two types of precession?
A. Equinox and Solstice
B. Axial and Perihelion
C. Period and Area
D. Perihelion and Aphelion

Answers

Answer:

correct answer is D

Explanation:

answer is perihelion and aphelion

Select all the correct answers. a leaf falls through the air, floating as it falls. air resistance is visibly affecting the leaf. which two properties of the leaf are allowing it to be affected by air resistance? acceleration due to gravity initial distance from the ground mass surface area

Answers

Surface area and Mass

When a leaf falls, it is being accelerated by gravity to the ground but opposed by air resistance also the drag. The net force on a leaf will therefore be calculated by subtracting its weight of the leaf from its drag.

What is Air resistance ?

Air exerts a force known as air resistance. When an object is travelling through the air, the force works in the opposite direction.

While a sports vehicle with a streamlined design will encounter reduced air resistance and experience less drag, the automobile will be able to move more quickly than a truck with a flat front.The speed, area, and shape of the object passing through the air all affect air resistance. Air density and resistance are affected by altitude, temperature, and humidity. The resistance increases with speed and area, respectively.

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What would the speed of an observer be if a red (4. 688 × 1014 hz) traffic light appeared green (5. 555 × 1014 hz) to the observer?

Answers

The speed of an observer be if a red (4. 688 × 1014 hz) traffic light appeared green (5. 555 × 1014 hz) to the observer is 0.185v using doppler effect

Utilize the approximation of the Doppler shift formula, (delta f)/f = V/c, for V/c 1 to determine which V on the list is closest. It's a little trickier to calculate the precise Doppler shift formula for light. Use what you are aware of. It is often exclusively covered in relativity theory classes. The formula for the Doppler shift of sound heard by a moving observer is NOT the same.

5.551*107 m/s = (Delta f)/f = 0.185 V.

Doppler radar transmits energy in pulses and detects any signal that is returned. The "Doppler shift" seen with sound waves is comparable to the phase shift effect. Due to compression (a change in phase) of sound waves, the "Doppler shift" causes the sound pitch of an item traveling toward you to be higher.

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Find the first three harmonics of a string of linear mass density 2. 00 g/m and length 0. 600 m when the tension in it is 50. 0 n.

Answers

The first three harmonics of the string are 131.8 Hz, 263.6 Hz and 395.4 Hz.

Velocity of the wave

The velocity of the wave is calculated as follows;

v = √T/μ

where;

T is tensionμ is mass per unit length = 2 g/m = 0.002 kg/m

v = √(50/0.002)

v = 158.1 m/s

First harmonic or fundamental frequency of the wave

f₀ = v/λ

where;

λ is the wavelength = 2L

f₀ = v/2L

f₀ = 158.1/(2 x 0.6)

f₀ = 131.8 Hz

Second harmonic of the wave

f₁ = 2f₀

f₁ = 2(131.8 Hz)

f₁ = 263.6 Hz

Third harmonic of the wave

f₂ = 3f₀

f₂ = 3(131.8 Hz)

f₂ = 395.4 Hz

Thus, the first three harmonics of the string are 131.8 Hz, 263.6 Hz and 395.4 Hz.

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An electric device delivers a current of 5. 0 a for 10 seconds. how many electrons flow through this device?

Answers

An electric device delivers a current of 5.0 A for 10 seconds then the number of electrons flowing through this device would be 3.125ₓ10²⁰

What is an electric charge?

Charged material experiences a force when it is exposed to an electromagnetic field due to the physical property of electric charge. You can have a positive or negative electric charge (commonly carried by protons and electrons respectively). Unlike charges attract one another while like charges repel one another. We refer to an object as neutral if it has no net charge.

Electric current is defined as the charge per unit of time.

The mathematical relation between current and the electric charge

I =Q/T

where I is the current flowing

Q is the total electric charge

T is the time period for which the current is flowing

By using the above relation between electric current and electric charge

I =Q/T

By substituting the values of current and time

5 =Q/10

Q= 50 Coulomb

The charge on one electron is -1.6 ×10⁻¹⁹ coulomb.

The number of electrons = Total charge /charge on the one electron

                                         =50/1.6×10⁻¹⁹

                                          =3.125ₓ10²⁰

Thus, the total number of electrons flowing through the device would be 3.125ₓ10²⁰.

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Select the correct answer. which object has the least amount of kinetic energy? a. a car driving down a road b. a soccer ball rolling down a hill c. a bicycle locked to a bike rack d. a satellite orbiting earth

Answers

Answer:

c. a bicycle locked to a bike rack

Answer: Option (C). A bicycle locked to a bike rack.

If a car driving down the road doubles its speed what happens to its kinetic energy?

Answers

Answer:

Kinetic energy doubles

A mass m is attached to an ideal massless spring with spring constant k. In experiment 1 the mass oscillates with amplitude a, and period t. A student grabs the mass and brings it to rest before starting experiment 2. In experiment 2, the mass is set to oscillate with a larger amplitude of 3a. What is the period of the oscillation in experiment 2?.

Answers

Time period remains the same in both the experiment as change in amplitude does not affect time period.

What are the factors on which time period depends in SHM?

Time period is given by:

[tex]T=2\pi \sqrt{\frac{m}{k} }[/tex]

where,

T = time period

m = mass

k = spring constant

In a straightforward harmonic motion, we see from the preceding formula that the time period depends only on the object's mass and spring constant (SHM). The time period will adjust to any variations in the object's mass or the spring constant.

What is Spring Constant?

A spring's "spring constant" is a property that quantifies the relationship between the force acting on the spring and the displacement it produces. In other words, it characterises a spring's stiffness and the extent of its range of motion.

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Earhart struck up a close friendship with another pioneering american woman. Who was she?. What is the molar mass of aluminum sulfate? 278.0 g/mol 315.2 g/mol 306.2 g/mol 123.0 g/mol 342.2 g/mol In your own words, define the unit rate in an equation of proportional relationship y= kx. Where did Commodore Perry attack the Spanish fleet, starting the Spanish-American War? (5 points) the Philippine Islands Cuba Guam Puerto Rico Which white blood cell phagocytizes microorganisms and becomes a macrophage in the tissue? Graphical location affects the body's ability to synthesize vitamin d. a) true b) false What is the independent variable in the following function? Which of the following linear equations corresponds to the table above?O A. y = 4x - 3O B. y=/4 x-3OC. y=1/4x+3OD. y = 4x + 3 What principle function of the nervous system analyzes information, stores some aspects, and makes decisions about appropriate behavior? A home gardener estimates that 18 apple trees will produce an average yield of 80 apples per tree. But because of the size of the garden, for each additional tree planted, the yield will decrease by four apples per tree. How many trees should be planted to maximize the total I need help on how to solve for Z write the letter to the editor of a local newspaper highlighting your concern on the lack of charity seen in young people today.explain what would happen if young people do not show charity When suppliers are encouraged to locate near manufacturing plants, the goal of the jit partnership is to reduce ________ inventory A ball is dropped from a height of 6ft. whenever it hits the ground it bounces back to half its original height. what is the total distance the ball travels dropping and rebounding? Which of the following was a common way to decorate the Quran during the Golden Age of Islam? Calligraphy Illustrations of major scenes from Muhammad's life Preventing progress by discouraging ideas not found in the Qu'ran Hastening progress by encouraging mysticism What type of reactive intermediate is formed in the reaction of an alkene with br2 and water? The Mogul Runners ski club planned a trip to Park City. Of the total number of club members, 11 signed up to go. If this is 25% of the club, how many members does the ski club have? HELPMichael took a drive down to the beach and drove at a pace of 45mph on the way there. The trip took him 3 hours. He drives the exact same route on the way back, but takes it slow so he can enjoy the sunset. If Henry's return trip took him 4 hours, how fast was he driving on his return? Information collected from measurements that are free from systematic or statistical errors are considered:______ What is [tex]\frac{3}{4}[/tex] - [tex]\frac{2}{b}[/tex]