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Aleonysh [2.5K]
3 years ago
7

Please help! I haven't really been able to understand this topic :/

Physics
2 answers:
Anettt [7]3 years ago
4 0

Ok but y I thought it was upside down tho...

Alja [10]3 years ago
4 0
I think it’s the fourth one
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If you were capable of converting mass to energy with 100%, efficiency, how much mass would you need to produce 3.5x10^12 Joules
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Answer:

a) 3.9 x 10⁻⁵ kg

Explanation:

The amount of mass required to produce the energy can be given by Einstein's formula:

E = mc^2\\\\m = \frac{E}{c^2}

where,

m = mass required = ?

E = Energy produced = 3.5 x 10¹² J

c = speed of light = 3 x 10⁸ m/s

Therefore,

m = \frac{3.5\ x\ 10^{12}\ J}{(3\ x\ 10^8\ m/s)^2} \\\\m = 3.9\ x\ 10^{-5}\ kg

Hence, the correct option is:

<u>a) 3.9 x 10⁻⁵ kg</u>

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B. sent through the atmosphere 

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Explanation:

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