Physics Final Exam Review GCA

Front

What is net force?

Back

Net force is the vector sum of all the forces acting on an object. It determines the object's acceleration according to Newton's second law (F=ma).

Front

How do you calculate net force when multiple forces are acting in different directions?

Back

To calculate net force, add the forces acting in the same direction and subtract the forces acting in the opposite direction.

Front

What is charging by induction?

Back

Charging by induction is the process of charging an object without direct contact, typically by bringing a charged object close to a neutral object, causing a redistribution of charges.

Front

What is the half-life of a substance?

Back

The half-life is the time required for half of the quantity of a radioactive substance to decay.

Front

How do you calculate the remaining amount of a substance after a certain number of half-lives?

Back

Remaining amount = Initial amount × (1/2)^(number of half-lives).

Front

What is the relationship between voltage, current, and resistance?

Back

According to Ohm's Law, V = I × R, where V is voltage, I is current, and R is resistance.

Front

What is a galvanometer?

Back

A galvanometer is an instrument used to detect and measure small electric currents.

Front

What happens to the current in a circuit if the resistance increases while the voltage remains constant?

Back

If resistance increases while voltage remains constant, the current decreases according to Ohm's Law (I = V/R).

Front

What is the unit of electric current?

Back

The unit of electric current is the Ampere (A).

Front

What is the unit of voltage?

Back

The unit of voltage is the Volt (V).