Because of friction,

a. energy is not always conserved

b. not all potential energy is converted to kinetic energy

c. all of an object's kinetic energy turns into potential energy

d. all of an object's potential energy turns into kinetic energy

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.

If you put a helium-filled balloon in the refrigerator, what will happen?