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11Alexandr11 [23.1K]
2 years ago
9

A rock excerts a pressure of 20 N/cm^2 on the ground. what does 20N/cm^2 mean?

Physics
1 answer:
Lelechka [254]2 years ago
6 0

Answer:

A force of 20N acts on each cm^2 of area

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Speed of sound in cold air < Speed of sound in Warm air < Speed of sound in hot molten lead < Speed of sound in water

Explanation:

Step 1:

Speed of sound in water varies from 1450 to 1498 meters per second

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3 years ago
A 3 kilogram cat is resting on top of a bookshelf that is 1 meters high. What is the cat’s gravitational potential energy relati
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