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2 years ago

fill in the blank ,if a charge body touches the disc of an uncharged electroscope the leaves ------------------

Physics

1 answer:

Ilia_Sergeevich [38]2 years ago

7 0

Answer:

leaves will deverge

Explanation:

because of the nagwtive charge will become positive

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Which of the following does culture contribute to the preferences and behaviors of consumers?

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Values and beliefs

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3 years ago

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Aerosol cans use compressed gases to propel the contents out of the can. Which of the following is the best explanation for why

vovangra [49]

Answer:

As the can heats, the compressed gases will expand, causing the can to explode

Explanation:

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4 years ago

A force of 32.5N stretches a spring of 0.500cm. What force will stretch a similar spring 1.60 cm?

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104 N

Explanation:

Calculate the spring stiffness:

F = kx

32.5 N = k (0.500 cm)

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F = kx

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3 years ago

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3 years ago

Engine 1 has an efficiency of 0.13 and requires 7200 J of input heat to perform a certain amount of work. Engine 2 has an effici

r-ruslan [8.4K]

Answer:

3,342.86J

Explanation:

Engine 1

Quantity of Input Heat, $Q_{H}$ = 7200J

Efficiency, η = 0.13

Efficiency, η $=\frac{W}{Q_{H}}$

⇒ W = η $Q_{H}$

W = 0.13 × 7200

W = 936J

Engine 2

Efficiency, η = 0.28

Since Engine 2 performs same amount of work as Engine 1, then,

Work-done by Engine 2 = Work-done by Engine 1

W₂ = W₁ = 936J

Efficiency, η $=\frac{W}{Q_{H}}$

$Q_{H}$ = W / η

$Q_{H}=\frac{936}{0.28}$

$Q_{H}$ = 3,342.86J

The input heat require by the second engine is 3,342.86J

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3 years ago

fill in the blank ,if a charge body touches the disc of an uncharged electroscope the leaves ------------------​

fill in the blank ,if a charge body touches the disc of an uncharged electroscope the leaves ------------------