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zhenek [66]
3 years ago
13

How does an object gain potential energy

Physics
2 answers:
solniwko [45]3 years ago
8 0

Answer:

D

Explanation:

Gravitaional potential energy is energy that is stored by moving an object to a greater height above the ground.

im not sure if its right, but i tried :)

mixas84 [53]3 years ago
3 0

Answer:

d

Explanation:

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If there is 8 g of a substance before a physical change , how much will there be afterwards?
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Answer:

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8 0
3 years ago
A book light has a 1.4 W, 4.8 V bulb that is powered by a transformer connected to a 120 V electric outlet. The secondary coil o
VLD [36.1K]

Answer:

Turns of the primary coil: 500

Current in the primary coil: Ip= 0.01168A

Explanation:

Considering an ideal transformer I can propose the following equations:

        Vp×Ip=Vs×Is

Vp= primary voltaje

Ip= primary current

Vs= secondary voltaje

Is= secondary current

        Np×Vs=Ns×Vp

Np= turns of primary coil

Ns= turns of secondary coil

From these equations I can clear the number of turns of the primary coil:

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Therefore I can determine the current in the primary coil with the following equation:

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3 years ago
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