Which of the following is an example of electrical energy being converted to chemical energy?

a. a storage battery is charged using an electric current.
b. an electric furnace begins to emit heat to warm a house.
c. the wheels on a machine begin to turn and move a conveyer belt.
d. a loudspeaker, which is plugged in to the wall, begins to project sound.

A. A storage battery is charged using an electric current.

Explanation:

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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