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

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

measuring things 1 litre of water