Question

10 Michael wants to make sure his hair is completely

dry before he leaves his house in the morning.
He plugs his hair dryer into the wall outlet and
turns it on. Which of the following describes how
energy is used to dry Michael's hair?
A.
B.
C.
D.
Thermal energy is changed into electrical
energy and sound energy.
Light energy is changed into mechanical energy
and sound energy.
Sound energy is changed into light energy and
electrical energy.
Electrical energy is changed into thermal energy
and mechanical energy.

Answer 1

The energy used to dry Michael's hair is electrical energy, which is changed into thermal energy and mechanical energy.

Step-by-step explanation:

The correct answer is option D: Electrical energy is changed into thermal energy and mechanical energy.

When Michael plugs his hair dryer into the wall outlet and turns it on, electrical energy from the outlet is transferred to the hair dryer. This electrical energy is then used to produce thermal energy, which allows the hair dryer to blow hot air. The hot air produced by the hair dryer then dries Michael's hair through the mechanical energy of airflow.

Learn more about Energy transfer in drying hair