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Nookie1986 [14]
3 years ago
8

O que acontecerá ao rendimento de uma máquina térmica se a temperatura da fonte que emite calor for reduzida em relação á fonte

que recebe esse mesmo calor?
Physics
1 answer:
elixir [45]3 years ago
4 0

Answer:

Nulo

Explanation:

Se o numero que aumenta for o mesmo que diminui, se torna nulo, pois nenhum passa a vencer o outro.

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A motorcycle of mass 100 kilograms travels around a flat, circular track of radius 10 meters with a constant speed of 20 meters
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Answer:

100/10 = 10 , 10 × 10 = 100÷20 = 5

I'm pretty sure its wrong

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In the Copper Plating Solution lab, you placed copper (Cu) pennies in vinegar. Vinegar is a weak acid with hydrogen ions (H+). W
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Suppose you had two magnets, who were attracted to each other, and you brought them together. Then took them apart by separating
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3 years ago
A motor keep a Ferris wheel (with moment of inertia 6.97 × 107 kg · m2 ) rotating at 8.5 rev/hr. When the motor is turned off, t
Talja [164]

Answer:

P = 133.13 Watt

Explanation:

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\omega_f = 2\pi f

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now angular acceleration is given as

\alpha = \frac{\omega_f - \omega_i}{\Delta t}

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now torque due to friction on the wheel is given as

\tau = I \alpha

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P = \tau \omega

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In a football game, a defensive lineman exerts a force upon an offensive lineman, causing the offensive lineman to be accelerate
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the answer is B.twice as much

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