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Jet001 [13]
3 years ago
6

An operating electric circuit consists of a lamp and a length of nichrome wire connected in series to a 12- volt battery. As the

temperature of the nichrome is decreased, what happens to the equivalent resistance of the circuit and the power developed by the lamp?
Physics
1 answer:
Natalka [10]3 years ago
4 0
The resistance of the wire will decrease as its temperature is decreased due to reduced hindrance in the flow of electrons. This means the current will increase. Electric power:
P = I²/R
The power produced will thus increase since the current is increasing and the resistance decreasing.
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Complete Question:

A basketball player tosses a basketball m=1kg straight up with an initial speed of v=7.5 m/s. He releases the ball at shoulder height h= 2.15m. Let gravitational potential energy be zero at ground level

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Answer:

a) Energy = mghₙ

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a) Total energy in terms of maximum height

Let maximum height be hₙ

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Since V=0 at maximum height, the total energy in terms of maximum height becomes

Energy = mghₙ

b) Height,  hₙ in meters

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h = 2.15m

g = 9.8 m/s^2

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hₙ = 2.15 + 0.5(7.5^2)/9.8

hₙ = 2.15 + 2.87

hₙ = 5.02 m

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Explanation:

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Answer:

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