Lance is rubbing two sticks together. The friction causes the kinetic energy from rubbing the two sticks to be converted into

A. heat energy.

B. chemical energy.

C. potential energy.

D. electrical energy.

A very elastic rubber ball is dropped from a certain height and hits the floor with a downward speed v. Since it is so elastic, the ball bounces back with the same speed v going upward. Which of the following statements about the bounce are correct

How are seismic waves used to provide evidence about earth's interior

before colliding, the momentum of block A is + 25.0 kg*m/s, and block b is + 35.0 kg*m/s. after, block a has a momentum + 60.0 kg*m/s. what is the momentum of block b afterwards?

If you jumped out of an airplane, you would begin speeding up as you fall downward, due to wind resistance, your velocity would become consistant with time.

Which response is the least effective when confronted with trying drugs or alcohol? "I'd rather be in control of what I do." "My future means too much to me to ruin it." "It's okay to lose control every once in a while.

It's a hot and sunny day and you decide to go for a drive. When you open your car door, it's a lot hotter than outside. Why is that

Which compound is composed of oppositely charged ions

Sara, who weighs 66 kg, is on a guilt trip after eating a 788-Calorie (788 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. She decides to work out before going to her weekly weight-watchers' meeting.

Can you get sunburned through glass?

Which statement about a signal transduction pathway is true? a. A signal transduction pathway provides a means for a signal molecule to pass through the cell membrane and initiate a chain of events inside the cell. b.