3 years ago

What is potential energy?

1 answer:

defon3 years ago

7 0

The energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors

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Which of the following statements is false?

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A 40 kg skier starts at the top of a 12 meter high slope. At the bottom, she is traveling 10 miles. How much energy does she los

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3 years ago

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A series circuit has a voltage supply of 12 V and a resistor of 2.4 kΩ. How much power is dissipated by the resistor?

adell [148]

Answer:

(B) 0.06W

Explanation:

power absorbed by the resistor is given by $\frac{V^2}{R}=I^2R$

Where V = voltage

R= resistance

I = current through the circuit

we have given V =12 Volt and resistance =2.4 K $\Omega$

current $I=\frac{V}{R}=\frac{12}{2.4\times 1000}=5\times 10^{-3}A=5mA$

power using voltage and resistance equation

$p=\frac{12^2}{2.4\times 1000}=60mW$ =0.06W

using current equation $P=I^2R=5^2\times 12=60mW$ = 0.06W

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4 years ago

A simple model of the hydrogen atom suggests that the electron orbits the proton. What is the

andrey2020 [161]

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3 years ago

A ball of 0.5kg slows down from 5m/s to 3m/s. Calculate the work done inthe process.

dlinn [17]

Answer:

9.8 Joules (rounded to 2 significant figures)

Explanation:

Work done (J)= Force(N) x distance changed (m)

Force= 9.80665 x 0.5kg
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Distance changed= 5-3
distance changed= 2m/s

--> work done= 4.90332 x 2

work done= 9.8 Joules

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3 years ago