3 years ago

3 examples of potential energy

1 answer:

4 0

The potential energy ..
1- when a rubber band is stretche and waiting to be released
2- an acorn hanging from a oak tree
3- a pice of celery

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dolphi86 [110]

Answer:

7.7056 x 10^23

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3 years ago

Veronika [31]

True, is the correct answer.

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3 years ago

Nadya [2.5K]

Answer:

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3 years ago

Scilla [17]

Answer:

$_{97}^{345}\textrm{Bk}$

Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same.

Am has an atomic number of 95. So correct reaction is:-

$^{343}_{95}\textrm{Am}+^{4}_{2}\textrm{He}\rightarrow ^A_Z\textrm{X}+2^1_0\textrm{n}$

To calculate A:

Total mass on reactant side = total mass on product side

343 + 4 = A + 2

A = 345

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

95 + 2 = Z + 0

Z = 97

Hence, the isotopic symbol of unknown element is $_{97}^{345}\textrm{Bk}$

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3 years ago

andreev551 [17]

D only..

A is pure compound
B is mixture of compound and element
C is mixture of compounds
D is mixture of elements

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3 years ago