Solution Found!
A portable CD player uses a current of 7.5 mA at a
Chapter 21, Problem 107GP(choose chapter or problem)
Problem 107GP
A portable CD player uses a current of 7.5 mA at a potential difference of 3.5 V.
(a) How much energy does the player use in 35 s?
(b) Suppose the player has a mass of 0.65 kg. For what length of time could the player operate on the energy required to lift it through a height of 1.0 m?
Questions & Answers
QUESTION:
Problem 107GP
A portable CD player uses a current of 7.5 mA at a potential difference of 3.5 V.
(a) How much energy does the player use in 35 s?
(b) Suppose the player has a mass of 0.65 kg. For what length of time could the player operate on the energy required to lift it through a height of 1.0 m?
ANSWER:
Step 1 of 4
(a)
Here we need to determine the energy the CD player uses in when it is operated across a potential difference of
and carries current of
.
Given data,
Voltage,
Current,
Time,
To find,
Energy,