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Sagot :
the first one is ideal
I'm not sure about the last one sorry
Answer:
First question:
b. Ideal machine
last question:
a. 9 × 10^10 J
Explanation:
[tex]{ \bf{E = m {c}^{2} }} \\ { \sf{E = (1 \times {10}^{ - 6} ) \times {(3 \times 10 {}^{8}) }^{2} }} \\ { \sf{E = 9 \times {10}^{10} \: joules }}[/tex]
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