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olya-2409 [2.1K]
3 years ago
12

a body of mass 3kg is dropped from a height 15m.what would be the velocity of the body at 10m of height? take g=10m/s​

Physics
1 answer:
mixer [17]3 years ago
5 0

Answer:

Explanation:

using v^2 = u^2 +2AS                                                                                                             here : v = ? , u = 0 , a = 10 , s = 10.                                                                                                            v*v = 0 + 2 (100)                                                                                                                    v^2 = 200                                                                                                                         v =  \sqrt{200                                                                                                            therefore , v = 14.14 m/s

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How many electrons are in the outer energy level of an atom of carbon
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In each of the parts of this question, a nucleus undergoes a nuclear decay. Determine the resulting nucleus in each case.
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Answer:

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(B). The resulting nucleus is Po.

(C). The resulting nucleus is Ne

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We need to calculate the resulting nucleus

Using given data

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(B). In beta-minus decay,

We know that,

When the nucleus emit beta- minus particle then atomic mass of particle is same and atomic number increase by 1.

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Using given data

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(C). In beta-plus decay,

We know that,

When the nucleus emit beta- plus particle then atomic mass of particle is same and atomic number decrease by 1.

We need to calculate the resulting nucleus

Using given data

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(D). In gamma decay,

We know that,

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We need to calculate the resulting nucleus

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(B). The resulting nucleus is Po.

(C). The resulting nucleus is Ne

(D). The resulting nucleus is Tc.

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