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natita [175]
2 years ago
15

The speed of light (c) is:

Physics
1 answer:
Radda [10]2 years ago
7 0

Answer:

A

Explanation:

Speed of light is 299 792 458 m / s. So option A is answer.

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why is a train more difficult to stop then a rolling ball even if they are traveling at the same speed? URGENT
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Think of the formula force=mass x acceleration. even though they have the same acceleration, a train has more mass. is that helpful?
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3 years ago
Your roommate leaves a 120W fan running in your apartment.Over the course of an hour,how much thermal energy does the fan add to
zubka84 [21]

Answer:

4.32\cdot 10^5 J

Explanation:

Power is related to energy by the following relationship:

P=\frac{E}{t}

where

P is the power used

E is the energy used

t is the time elapsed

In this problem, we know that

- the power of the fan is P = 120 W

- the fan has been running for one hour, which corresponds to a time of

t = 1 h \cdot (60 min/h)(60 s/min)=3600 s

So we can re-arrange the previous equation to find E, the energy (in the form of thermal energy) released by the fan:

E=Pt=(120 W)(3600 s)=4.32\cdot 10^5 J

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3 years ago
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andrey2020 [161]

Answer:

It makes it more difficult to move, making it stretch and exercise your muscles better becuse there is a resistant force to overcome.

Explanation:

-Sky :3

6 0
2 years ago
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Example of energy transfer from potential to kinetic and back
Alex_Xolod [135]

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3 years ago
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