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Oxana [17]
3 years ago
9

Most of the energy we use today comes from renewable sources/ a. True b. False

Physics
2 answers:
RSB [31]3 years ago
7 0
False, because most of it is diesel and petrol, which are not renewable sources.( I'm not 100% sure though)
aleksley [76]3 years ago
6 0
True because it could be all things like plants, food, etc
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Block A of 5 kg with a speed of 3 m/s collides with block B of 10 kg that is stationary. After the collision, block B travels wi
Lemur [1.5K]

Answer:

-1m/s

Explanation:

We can calculate the speed of block A after collision

According to collision theory:

MaVa+MbVb = MaVa+MbVb (after collision)

Substitute the given values

5(3)+10(0) = 5Va+10(2)

15+0 = 5Va + 20

5Va = 15-20

5Va = -5

Va = -5/5

Va = -1m/s

Hence the velocity of ball A after collision is -1m/s

Note that the velocity of block B is zero before collision since it is stationary

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3 years ago
When the temperature of a gas in a balloon is reduced by half, the average kinetic energy of the particles is
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