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MArishka [77]
3 years ago
14

When a certain amount of current flows through a resistor, it uses 3.00 W of power. If the current doubles, how much power will

the resistor use? (Hint: R stays the same. How does P depend on I and R?) ( unit=W)
Physics
1 answer:
asambeis [7]3 years ago
7 0

Answer: 12

Explanation: Acellus

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What is the average translational KE of 5 moles of gas molecules at 300 K?
aev [14]

Answer:

What is the average translational kinetic energy of molecules in an ideal gas at 37°C? The average translational energy of a molecule is given by the equipartition theorem as, E = 3kT 2 where k is the Boltzmann constant and T is the absolute temperature.

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3 years ago
Not Physics!!! Philosophy!!!
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5 0
4 years ago
What length of a certain metal wire of diameter 0.15 mm is needed for the wire to have a resistance of 15 ω? the resistivity of
Murljashka [212]

The resistance of the cylindrical wire is R=\frac{\rho l}{A}.

Here R is the resistance, l is the length of the wire and A is the area of cross section. Since the wire is cylindrical A=\frac{\pi d^2}{4} . Rearranging the above equation,

A=\frac{\rho l}{R}\\  \frac{\pi d^2}{4}=\frac{\rho l}{R}\\  l=\frac{\pi d^2 R}{4 \rho}

Here d=0.15, R=15, \rho=1.68(10^{-8}).

Substituting numerical values,

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The length of the wire is 15.78 \;\;m

5 0
4 years ago
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