A car travels between 100-mile and 25-mile markets on a highway in 3 hours. The average speed of the car during the interval is

Tom pushes a 3·5 kg box with a net force of 50 N, James pushes the same box with a net force of 75 N. Who pushes the box with the greater acceleration?

Which phenomenon causes an object to appear bent from above the surface of one medium to below the surface of another medium?

A rock from Mars experiences a 263% increase in its weight once it arrives on Earth. What accounts for this increase in weight?

Sulima tells Alison, "I told my parents I went to a movie with you, but really I was with Alex and we had sex. So, back me up! Then, when Sam and you decide to go all the way, you can tell your parents you're out with me. They'll never find out.

A radio technician measures the frequency of an AM radio transmitter. The frequency is. What is the frequency in megahertz?

What color of light can plants "see"?

Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 µC of charge and bead B carries 1 µC. Which one of the following statements is true about the magnitudes of the electric forces on these beads

A ball is thrown straight up at 20 m. What is the balls velocity as it hits the ground?

Block 1 and Block 2 have the same mass, m, and are released from the top of two inclined planes of the same height making 30 degree and 60 degree angles with the horizontal direction, respectively.

Water waves change direction when they encounter water of different depths and begin to move at different wave speeds. This is called A. reflection B. constructive interference C. the Doppler effect D. refraction