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disa [49]
2 years ago
9

How much longer will a 300 m steel bridge be on a 30C day than a –10C night?

Physics
1 answer:
RideAnS [48]2 years ago
6 0

Answer:

Explanation: A bar of an unknown metal has a length of 0.975 m at 45°C and a length of 0.972 m at. 23°C.

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Oliga [24]

Answer:

Explanation:

10. As a spaceship is moving toward Earth, an Earthling measures its length to be 325 m, while the captain on board radios that her spaceship's length is 1150 m. (c = 3.00 × 108 m/s) (a) How fast is the rocket moving relative to Earth? (b) What is the TOTAL energy of a 75.0-kg crewman as measured by (i) the captain in the rocket and (ii) the Earthling?

3 0
2 years ago
Use the right-hand rule for magnetic force to determine the charge on the moving particle. This is a charge.
german

Answer:

Use the right-hand rule for magnetic force to determine the charge on the moving particle.

This is a  

negative

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Explanation:

4 0
3 years ago
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A bicycle has a momentum of 36 kg* m/s and a very!I city of 4 m/s.What is the mass of the bicycle?
Strike441 [17]

p = 36 kgm/s

v = 4m/s

we know that,

p = mv

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m  =  \frac{36}{4}

m = 9kg

8 0
3 years ago
What is the average velocity of a car starting from 0 and travels 7 meters in 9 seconds?
Leni [432]

Your question has been heard loud and clear.

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Total distance=7meters

Total time taken=9 seconds.

Average velocity = 7/9= 0.77 metres/second

Average velocity= 0.77m/s

Thank you.

5 0
3 years ago
Q)How is a conductor different from an insulator. A)A Conductor contains free electrons. B)A conductor contains free protons. C)
I am Lyosha [343]

A conductor contains electrons that are bound so weakly to their atoms
that they can be ripped away with a small voltage, and sent scurrying in
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3 years ago
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