a car headlamp bulb draws 1.9 a from the battery. how much charge flows through the bulb
in 5.0 minutes?

570 Coulombs

We are given;

We are required to calculate the charge that flows through the bulb;

Q = It

where, Q is charge in coulombs, I is the current and t is time in seconds.

In this case;

Time = 5.0 minutes

But, 1 min = 60 seconds

Time = 300 seconds

Thus;

Charge, Q = 1.9 A × 300 seconds

                  = 570 Coulombs

Hence, the charge through the bulb is 570 Coulombs

c)as speed changes, wavelength and frequency change.

everything changes!

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