Physics, asked by irishahoque, 3 months ago

2) A pole-vaulter has 3500J of energy when he crosses a bar 7 meters high. How much kinetic energy will he have just before he reaches the ground ( assuming no friction) ?

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Answered by khushiargarwal399

0

Answer:

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Answered by Anonymous

1

Answer:

Answer:

atomic number is 21, so element must be Scandium.

neutron = 45-21 = 24

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