What is meant by the statement that the power of an electric heater is 1200W? What happens to the kinetic energy when the velocity of a moving body is doubled?

a and c

c is 100% but i am confused in a

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

magnified images possible images can be real = projected onto a screen

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.