When a marble is at rest what happened

Answers

Answer 1

Answer: The marble will stay in place until another force pushes it

Answer 2

Answer:

Answer: the marble will remain in place at a constant velocity of zero

Explanation:

Newton's first law states that a body at rest will remain at rest, and a body in motion will remain in motion in a straight line at a constant velocityunless acted upon by an outside force

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1. In which medium does sound travel the fastest? a. salt water
b. fresh water
c. air
d. cast iron

2. A wave has a wavelength of 10 mm and a frequency of 5 hertz. What is its speed?
a. 50 mm/s
b. 50 hertz/s
c. 2 mm/s
d. 0.50 mm/s

3. How does reflection differ from refraction and diffraction?
a. Reflection is the only process in which the wave does not continue moving forward.
b. Reflection is the only process that involves a change in the wave.
c. Reflection affects all types of mechanical waves, but refraction and diffraction do not.

Answers

Answer : 1. cast iron

2. 50 mm/s

3. Reflection is the only process in which the wave does not continue moving forward.

Explanation :

1. The speed of sound is greatest in solid. So, the speed of the sound is fastest in cast iron. It is approximately equal to 4600 m/s.

2. Wavelength, λ = 10 mm

Frequency, υ = 5 Hz

Speed = wavelength × frequency

Speed = 10 mm × 5 s⁻¹

Speed, s = 50 mm/s

3. The bouncing back of light is called the reflection of light. In this process, the wave does not continue moving forward.

1- CAST IRON

2- 50 mm/s

3- Reflection is the only process in which the wave does not continue moving forward.

All of the following are electromagnetic waves excepta. X rays.
b. sound waves.
c. gamma rays.
d. radio waves.

Answers

Sound waves are longitudinal waves. All are the examples of Electromagnetic waves except the sound wave.

EM Waves:

EM waves are transverse waves means the propagation of the wave is the perpendicular the the wave oscillation.

Sound waves:

These are the longitudinal waves because the propagation of the wave is parallel to the vibration of particles.

It needs medium like air and water.

Its speed is very lesser than speed of EM wave.

Therefore, all are the examples of Electromagnetic waves except the sound wave.

To know more about sound wave,

brainly.com/question/21995826

b. sound waves
Sound waves need to travel through a medium such as a solid, liquid, or gas. The sound waves move through each of these mediums by vibrating the molecules in the matter. This means it isn't an electromagnetic waves but it is a wave, an example of the difference, all electromagnetic waves can travel in a vacuum at the universal speed limit, this is 299 792 458 m/s.

Convert 0.12 m to km.

Answers

Answer:

0.00012km

Explanation:

I hope this answers your question.

The precision of a voltmeter is ±0.005 V. The accepted value for a measurement is 9.016 V. Which measurement is in the accepted range?

Answers

Since there are no choices given, let us just solve for the acceptable range of values. The problem states that the precision of a voltmeter is +- 0.005 V. Meaning, the value can deviate by this amount positively or negatively. Since our accepted value is 9.016 V, then the acceptable range would be 9.011 V ~ 9.021 V.

If mechanical energy is conserved in a system the energy at any point in time can be in the form of

Answers

The mechanical energy of the system at any point in time can be in the form of kinetic energy, potential energy, and elastic energy. These all are interconvertible, hence mechanical energy is conserved.

What is Mechanical Energy?

The term mechanical energy accounts for the total energy by the virtue of position as well as the motion of an object.

When an object is dropped from a certain height, then the mechanical energy of the object at any instant is given as the sum of kinetic energy and potential energy. The expression is given as,

ME = KE + PE

But at some point in time, the potential energy can be in the form of elastic energy as well. This energy is known as spring potential energy. Hence, the mechanical energy is conserved in a system at any point considering the forms like kinetic energy, potential energy, and elastic energy.

Thus, we can conclude that the mechanical energy of the system at any point in time can be in the form of kinetic energy, potential energy, and elastic energy. These all are interconvertible, hence mechanical energy is conserved.

Learn more about mechanical energy here:

brainly.com/question/12319302

potential, kinetic, elastc energies

How much voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms ofresistance?