Which of the following is an example of uniform circular motion?
A. Swinging on a swing
B. Spinning on a merry-go-round
C. Sliding down a slide
D. Bouncing on a trampoline

Answers

Answer 1

Answer:

B

Explanation:

First narrow answers to CIRCULAR motion.

Only A and B have circular motion.

Second look at the keyword UNIFORM. A swing does not have uniform motion because it will accelerate due to gravity and have the most velocity at the bottom of the swing.

Therefore, it must be B.

Answer 2
Answer: B

Explanation: uniform circular motion only occurs on a merry go round

Related Questions

Un cuerpo se mueve por una carretera que tiene rozamiento.¿Podríamos aplicar el principio de conservación de la energía mecánica? ¿Qué requisitos se han de cumplir para poder aplicarla?

Answers

Answer:

Sí se puede aplicar el Principio de Conservación de la Energía Mécanica siempre y cuando se considere los efectos de pérdida de energía a causa del rozamiento, de lo contrario, no se cumpliría el requisito de conservación derivado del citado principio de conservación.  

Explanation:

Consideremos que el cuerpo representa nuestro sistema de estudio, el cual se desplaza por una carretera y experimenta rozamiento, significando cambios en la energía cinética y potencial gravitacional. La presencia de rozamiento indica una disipación de la energía del cuerpo, cuya energía mecánica total disminuye, significando un sistema no conservativo.

Sí se puede aplicar el Principio de Conservación de la Energía Mécanica siempre y cuando se considere los efectos de pérdida de energía a causa del rozamiento, de lo contrario, no se cumpliría el requisito de conservación derivado del citado principio de conservación.  

Fermi energy of conduction electrons in silver is 0.548 J. Calculate the number of such electrons in unit cm3

Answers

Answer:

[tex]n=1.86*10^{-30}m^3[/tex]

Explanation:

From the question we are told that:

Fermi energy of conduction electrons [tex]E_f=0.548J[/tex]

Generally the equation for Fermi energy is mathematically given by

 [tex]E_f=\frac{3}{\pi}^2/3*\frac{h^2}{8m}*{n^{2/3}}[/tex]

 [tex]E_f=\frac{3}{\pi}^2/3*\frac{h^2}{8m}*{n^{2/3}}[/tex]

 [tex]{n^{2/3}}=\frac{E_f}{\frac{3}{\pi}^2/3*\frac{h^2}{8m}}[/tex]

Where

h= Planck's constant

 [tex]{n^{2/3}}=\frac{E_f}{\frac{3}{\pi}^2/3*\frac{h^2}{8m}}[/tex]

 [tex]{n^{2/3}}=\frac{0.548J}{3.62*10^{-19}}[/tex]

 [tex]n=(1.51*10^{-20})^{3/2}[/tex]

 [tex]n=1.86*10^{-30}m^3[/tex]

What the use of physics in our life​

Answers

Answer:

the use of physics in our life is to be a science student.

The equation below is used to calculate the mechanical advantage of an ideal wheel and axle.


mechanical advantage =
wheel radius
__________
axle radius


A student compares two wheel-and-axle simple machines. Machine 1 has a wheel radius of 50 centimeters, and an axle radius of 10 centimeters. Machine 2 has a wheel radius of 100 centimeters, and an axle radius of 10 centimeters. What is true of these simple machines’ mechanical advantage?
A.
Machine 1’s mechanical advantage is greater, which means that this machine can do more work with less force than Machine 2.

B.
Machine 1’s mechanical advantage is greater, which means that this machine can move faster than Machine 2.

C.
Machine 2’s mechanical advantage is greater, which means that this machine can do more work with less force than Machine 1.

D.
Machine 2’s mechanical advantage is greater, which means that this machine can move faster than Machine 1.

Answers

Answer:

b

Explanation:

Machine 2’s mechanical advantage is greater, which means that this machine can do more work with less force than Machine 1.

Mechanical advantage

The term mechanical advantage is the ratio of the radius of wheel to the radius of the axle for a wheel and axle system.

The true statement about the two machines that were compared; 1 and 2 is that, machine 2’s mechanical advantage is greater, which means that this machine can do more work with less force than Machine 1.

Learn more about mechanical advantage:https://brainly.com/question/16617083

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An air track car with a mass of 0.55 kg and velocity of 5.8 m/s to the right collides and couples with a 0.45 kg car moving to the left with a velocity of 3.9 m/s. What is the combined velocity of the cars just after the collision?

Answers

Explanation:

Given:

m1 = 0.55 kg

m2 = 0.45 kg

vi1 = +5.8 m/a

vi2 = -3.9 m/a

Solve for V

m1vi1 + m2vi2 = (m1 + m2)V

(0.55 kg)(+5.8 m/s) + (0.45 kg)(-3.9 m/s) = (0.55 + 0.45)V

V = +1.46 m/a

This means that the combined mass after the collision is moving to the right at 1.46 m/s

A 19 kg ball has an initial velocity of 10 m/s. How much energy will be transformed into gravitational force?

Answers

Answer:

E = 950 J

Explanation:

The total amount of energy that can be transformed into gravitational energy will be equal to the kinetic energy of the ball at initial state:

[tex]E = K.E = \frac{1}{2} mv^2[/tex]

where, E = Energy = ?

m = mass of the ball = 19 kg

v = initial speed of the ball = 10 m/s

Therefore,

[tex]E = \frac{1}{2} (19\ kg)(10\ m/s)^2[/tex]

E = 950 J

Which two types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light?
o radio waves and infrared light
O visible light and X-rays
O microwaves and gamma rays
gamma rays and X-rays

Answers

Answer:

Gamma rays and x rays

Explanation: just took the test

Gamma rays and X-rays have higher frequencies than the waves that make up ultraviolet light. Hence option D is correct.

What is Electromagnetic Spectrum ?

Electromagnetic spectrum is nothing but the range of wavelengths or frequencies on which electromagnetic radiation extend. it is whole distribution of electromagnetic waves according to frequency or wavelength. Electromagnetic wave is nothing but a photon which carries energy. Photon wave has frequency, wavelength as well as amplitude.

Electromagnetic spectrum is show in figure.

There is inverse relation between wavelength and frequency as υ = c/λ

where υ is the frequency, λ is the wavelength and c is the speed of light.

as wavelength increases, frequency decreases vice verse.

In this figure we can see that radio waves has highest wavelength hence it has lowest frequency. X ray and gamma rays has lowest wavelength hence it has highest frequency.

Hence option D is correct.

To know more about electromagnetic waves, click :

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Help help help help help

Answers

I am not sure on the rest but the answer to question 4 is volts. sorry i couldn’t be of more help!

b) Find the value of xº from the following figure.
i.
ii.
yo
500 x
хо
2x0​

Answers

Answer:

the value of the question is 1 because of the indicies rule.

Answer:

1

Explanation:

because

Our founding fathers got many of their ideas about a republican
government from the Romans.
A: True
B: False

Answers

True, give brainliest to the person above/below me! They deserve it.

Define Initial velocity.​

Answers

Answer:

Initial velocity is defined as the velocity at time t=0.

Its Unit is m/s.

represented by u.

calculated by using formula.

v=u+at

u=v-at.

Answer:

Initial velocity is the velocity which the body has in the beginning of the given time period

Hope it helps

-------☆゚.・。゚ᵴɒƙυᴚᴀ_ƨȶäᴎ❀

HELLPPPPPPP FASTTTTBDJEJDJDJSJJWJWJW

Answers

i think they remain the same, i’m sorry bro i tried

You have viewed multiple unknown astronomical objects in this lab activity. In all tests, what was your test variable (independent variable)?

The amount of an element in each object
The type of elements in each spectrum
The astronomical object viewed by the spectrometer

Answers

Answer:

Could you give information about the lab

Explanation:

Answer:

The spectrum of each astronomical object

Explanation:

I took the test and got it right

how does current flowing through a resistor affect the temperature​

Answers

The answer is... When electrical current flows through a type or kind of material, the electrons come in contact with the small atoms of the material and their collision produces heat. When the flow is through or going through a resistor, the resistance is offered to the flow and the collisions will generate heat. This is the reason why temperature rises. Hope this helps!

in physics the word medium means

A. A type of paint
B. A size.
C. A material or substance.
D. A psychic.

Answers

Answer:

the answer is C a material or substance

Explanation:

BRAINLIEST PLZZZZZZZZZZZZZZZ

C- a material or substance

No links !!!!
Newton's First Law state
For every action there is an equal and opposite reaction.
An object in motion stays in motion unless acted upon by an unbalanced force.
Gravity acts on all objects that have mass.
Force= mass x acceleration

Answers

Answer: an object in motion stays in motion unless acted upon by an unbalanced force

Explanation: this is Newton’s first law of motion, which states that an object, whether in a moving or resting state, will continue to stay in that state unless there is an unbalanced force that changes that state. For a moving object, an example would be friction worth the ground. For a resting object, an example would be the force of a push.

S. Explain the washing effects of detergents of soap and why detergents in warm water washes greasy
clothes even better

Answers

Answer:

Soaps and detergents are made from long molecules that contain a head and tail the detergent molecules also help to make the washing process more effective by reducing the surface tension of the water. Surface tension is the force which helps a blob of water on a surface hold its shape and not spread out.

The range of a projectile is the vertical height reached; True or False?

Answers

Answer:

False

Explanation:

The range of a projectile is the horizontal height reached

A person is heterozygous for big ears, what is their genotype?

Answers

./././././././././././././././././././.

it's on the screenshot, apparently it was inappropitae so i couldnt submit it here

a light ray reflects with an angle of 65 degrees what is the angle of refraction?
A. 65 degrees
B. 90 degrees
C. 32.5 degrees
D. 25 degrees
brainliest if correct

Answers

Answer:

A

Explanation:

A because the reflection and refraction should always be the same angle

which type of star cluster forms from tightly packed groups or older stars ?
binary
eclipse
globular
open

Answers

the answer is globular :)

Globular star clusters form from tightly packed groups and/or older ancient stars.

What are globular star clusters?

Globular star clusters can be defined as ancient stars packed in a spherical and/or symmetrical shape.

Globular star clusters represent the most common types of groups (i.e., clusters) of ancient stars.

These groups of stars (globular) are characterized to be densest in the center of the cluster.

In conclusion, globular star clusters form from tightly packed groups and/or older ancient stars.

Learn more about globular star clusters here:

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Fluorine and chlorine are members of which family?

Answers

Answer:

The halogens are the family of chemical elements that includes fluorine (atomic symbol F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The halogens make up Group VIIA of the Periodic Table of the elements. Elemental halogens are diatomic molecules.

Elements: Fluorine; Iodine; Bromine; Astatine

Explanation:

how is an earthquake's origin and intensity identified?

Answers

Answer:

using a seismograph

Explanation:

what is matter explain​

Answers

Matter is the Stuff Around You
Matter is everything around you. Atoms and compounds are all made of very small parts of matter. Those atoms go on to build the things you see and touch every day. Matter is defined as anything that has mass and takes up space (it has volume).

How does space exploration affect the economy of Florida?
A) Since rockets launched from Florida are paid for by the federal government, there is a positive effect on Florida's economy.
B) Since rockets launched from Florida pull tourists away from Disney World and local beaches, there is a negative effect on Florida's economy.
C) Since rockets launched from Florida must be purchased from companies located outside of Florida, there is a negative effect on Florida's economy.
D) Since rockets launched from Florida require hundreds of scientists and engineers to move to the area, there is a positive effect on Florida's economy.

Answers

Answer:

How does space exploration affect the economy of Florida?

A) Since rockets launched from Florida are paid for by the federal government, there is a positive effect on Florida's economy.

In a motor, electrical current enters through the brushes.


Please select the best answer from the choices provided



T

F
THE ANSWER IS TRUE

Answers

Answer: ITS T

Explanation:

In a motor, electrical current enters through the brushes. TRUE.

A prism is often used to show the different wavelengths of light or colors that can be found in white light. In one paragraph, using your own words, explain how the prism causes these colors to appear. Be sure to use proper spelling, grammar, and punctuation.

Answers

Answer:

A prism causes the different wavelengths of light or colors that can be found in white light because the prism is white, and white light contains all colors in the visible light spectrum. So an object that reflects all the colors in the visible light spectrum will appear white in color because white light contains all colors in the visible light spectrum.

Explanation:

I hope this helps! I just did a test with this question and I got the answer right! This is the answer that I put. Good luck :)

You should set a reward for yourself for achieving a goal. A. True B. False

Answers

Answer:

A

Explanation:

Answer:

true

Explanation:

sup

Please help I have no idea

Answers

Answer:

b

Explanation:

bbbbbbbbbbbbbbvgh c tyvftj xf

measure the thickness of the brake rotor. how thick is the brake rotor? please help I've Kittery spent forever trying to do this​

Answers

Answer:

Explanation:

its reading the caliper

as the 0 lines up w the 1/8" mark, it is 1 1/8"

Answer:

The minimum thickness will be stamped somewhere. You see there's part numbers and other things here you might need to use a wire brush to kind of clean it up but that's the thicknessUse a micrometer at the thinnest point on the surface of the rotor where it meets the pads to measure the minimum operational thickness. If your rotor needs to be cut or has worn passed this thickness, you'll need new rotors. You may also discover your rotor has Disc Thickness Variation.

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