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igomit [66]
2 years ago
6

Which statement best explains why light can travel with or without a medium?

Physics
1 answer:
elixir [45]2 years ago
7 0

Answer:

Transverse Waves do not require a medium to travel

Explanation:

Two major types of energy waves are longitudinal waves and transverse waves. A longitudinal wave is a wave where the particles of matter in the medium move in a parallel direction to the motion of the wave. This shows the energy transport and particle movement. The particles of matter only move temporarily. A wave is transferred energy it does not transfer particles of matter. A transverse wave is a wave in which the particles of matter in the medium move in a perpendicular direction to the motion of the wave.

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The gravitational force between two objects is represented by the variable F. If the distance is decreased by 5 what is the new
Anvisha [2.4K]

The universal law of gravitation states that:

Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to the square of distance between them.

It means that if the gravitational force is F, then if the distance is decreased by 5 times, then the new gravitation force is:

F/5² = F/25

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3 years ago
Q5- Knowing now that your mood might affect your memory, what strategies could you employ to assist your memories and make sure
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You can try recalling and rehearsing information about the memory.
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2 years ago
1)the car's engine power is 44000W. Explain this number in a physical sense
Ratling [72]

Answer:

1) It expresses the rate (top speed) at which it can move with time.

2) P = 20 W

3) h = 18 km

Explanation:

1) Power is the rate of transfer of energy.

⇒ Power = \frac{Energy(or workdone)}{Time}

i.e P = \frac{E}{t}

Thus a car's engine power is 44000W implies that the engine of the car can propel the car at this rate. This expresses the rate (top speed) at which it can move with time.

2) m = 400g = 0.4 kg

    t = 20 s

h = 100m

g = 10 m/s^{2}

P = \frac{mgh}{t}

  = \frac{0.4*10*100}{20}

  = \frac{400}{20}

P = 20 W

3) u = 600 m/s

   g = 10 m/s^{2}

From the third equation of free fall,

V^{2} = U^{2} - 2gh

V is the final velocity, U is the initial velocity, h is the height.

0 = (600)^{2} - 2 x 10 x h

0 = 360000 - 20h

20h = 360000

h = \frac{360000}{20}

  = 18000

h = 18 km

The maximum height of the bullet would be 18 km.

3 0
3 years ago
Why are house keys usually made of metal rather than glass
kherson [118]

Explanation:

doesn’t corrode easily and is soft enough for inexpensive tools to cut to the needed individual patterns.

4 0
3 years ago
The train slows down at the railroad crossing. Is that acceleration, velocity, speed, of none of the above?​
Vlad [161]

Answer:

none of the above

Explanation:

im pretty positive this is the answer tell me if i am wrong please

4 0
3 years ago
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