3 years ago

True or False: TV waves have a shorter wavelength than microwave rays

Physics

2 answers:

Ksju [112]3 years ago

5 0

The answer is going to be True!

kogti [31]3 years ago

3 0

Answer:

I think true..... :))))))))))

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3 years ago

An ideal heat engine absorbs 97.2 kJ of heat and exhausts 83.8 kJ of heat in each cycle. What is the efficiency of the engine?

r-ruslan [8.4K]

Answer:

13.7%

Explanation:

Given that,

Heat absorbed by the engine = 97.2 kJ

Heat exhausted by the engine in each cycle = 83.8 kJ

We need to find the efficiency of the engine. It is calculated by the formula.

$\eta=1-\dfrac{Q_e}{Q_a}\\\\=1-\dfrac{83.8}{97.2}\\\\=0.137\\\\=13.7\%$

so, the efficiency of heat engine is 13.7%.

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Explanation:

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3 years ago

What is the direction of the centripetal force when applied to an object?

mihalych1998 [28]

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3 years ago

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