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Sergeeva-Olga [200]
3 years ago
12

What is capacitance?

Physics
1 answer:
just olya [345]3 years ago
3 0

the amount of charge stored per volt

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any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.

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6 0
3 years ago
A Carnot engine performs 2.5 * 104 J of work in each cycle and has an efficiency of 66%. (a) How much heat does the engine extra
Natalka [10]

a.

The heat the engine <em>extracts </em>from its heat source in each cycle is 3.79 × 10⁴ J

The efficiency of the Carnot engine, ε = W/Q where W = work done per cycle = 2.5 × 10⁴ J and Q = heat extracted in each cycle.

Making Q subject of the formula, we have

Q = W/ε

Since ε = 66% = 0.66, we substitute the values of the variables into the equation for Q.

So, Q = W/ε

Q = 2.5 × 10⁴ J/0.66

Q = 3.79 × 10⁴ J

So, the heat the engine <em>extracts </em>from its heat source in each cycle is 3.79 × 10⁴ J

b.

The temperature of its heat source is 588.76 °C

Also, the efficiency of the Carnot engine, ε = 1 - T/T' where T = temperature of exhaust heat = 20° C = 273 + 20 = 293 K and T' = temperature of heat source.

Making T' subject of the formula, we have

T' = T/(1 - ε)

Since ε = 66 % = 0.66

Substituting the values of the variables into the equation, we have

T' = T/(1 - ε)

T' = 293 K/(1 - 0.66)

T = 293 K/0.34

T = 861.76 K

We convert this to Celsius.

T(K) = T(°C) + 273

T(°C) = T(K) - 273

T(°C) = 861.76 - 273

T(°C) = 588.76 °C

So, the temperature of its heat source is 588.76 °C

Learn more about Carnot engine here:

brainly.com/question/13170743

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2 years ago
What kind of image is formed by a plane mirror
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3 years ago
When you cook a steak, what kind of energy do you increase in the steak?
lina2011 [118]

Answer:

B im pretty sure.

Explanation:

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3 years ago
Which is an important step in how an electric motor uses magnetic force to produce motion?
Romashka [77]
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3 years ago
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