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3 years ago

6

A small rectangular block of metal must be a magnet is it

1 answer:

Arlecino [84]3 years ago

3 0

D. Is repelled by a magnet

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Anaerobic metabolism:

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B. leads to muscle strain.

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To escape from a horrible fire, two people are forced to jump from the third story of a burning building onto solid concrete. Wh

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The bouncing person because the bounce helped him survive

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2 years ago

The atomic number of a nucleus decreases during which nuclear reactions?

Goryan [66]

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2 years ago

A meteoroid is moving towards a planet. It has mass m = 0.78×109 kg and speed v1 = 4.1×107 m/s at distance R1 = 2.8×107 m from t

wariber [46]

Answer:

$PE=81.755\, J$

Explanation:

Given that:

mass of meteoroid, $m=7.8\times 10^8 \,kg$

radial distance from the center of the planet, $R= 2.8\times 10^7 m$

mass of the planet, $M=4.4\times 10^{25}\, kg$

<u>For gravitational potential energy we have:</u>

$PE=G\frac{M.m}{R}$

substituting the respective values:

$PE=6.67\times 10^{-11}\times \frac{4.4\times 10^{25}\times 7.8\times 10^8}{2.8\times 10^7}$

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2 years ago

A cannon is shot downwards with an initial speed of 10m/s at an angle of 20 degrees South of East off a 60m cliff. Find the init

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Answer:hmm

Explanation:

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2 years ago