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zvonat [6]
3 years ago
12

After the cart bounces, how far does it roll back up the ramp?

Physics
1 answer:
vodomira [7]3 years ago
5 0
What cart ? What ramp ?
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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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3 years ago
What describes why voters xhoose political canidates?
Alexus [3.1K]
The voters political opinions and what they think what is right and wrong.
4 0
3 years ago
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Changes in sea level also affect these islands.

Most scientists agree that sea level has been gradually rising over the last thousand years, and this rise could be accelerating today due to global warming.

Rising sea level causes existing islands to migrate shoreward.
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3 years ago
You overhear two students discussing the topic of Doppler shift.
9966 [12]

Answer:

agree with student 2, disagree with student 1

Explanation:

If you want to know if the wavelength of light was shifted you have to know the original wavelengths

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The color of the star refers to the temperature of the star's surface which is not related to the doppler shift of the star

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3 years ago
What do we call the potential mechanical energy stored in an object when work is performed to change its shape?
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C) kinetic energy :)
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