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siniylev [52]
3 years ago
7

What is the study of the mone and stars

Physics
1 answer:
maks197457 [2]3 years ago
8 0
The study of the moon as well as the stars is astronomy
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The unit for energy is the joule (j). If the energy content of an object is 1,000 J, but then later is found to be 900 J, what i
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Answer: the object transferred some of its energy to its surroundings.

Explanation:

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1. An object moving with velocity 15 ms accelerates at 2 m/s for 5 seconds. Calculate the final velocity.​
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Frictional force increases with the increase in the _______________ of the surface.
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Frictional force increases with the increase in the roughness of the surface.

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How much energy must be removed from a 450 g block of ice to cool it from 0∘c to -20 ∘c?
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