Frequency of a wave

An alpha particle 1) is identical to a helium nucleus 2) can penetrate a sheet of aluminum 3) has a negative charge 4) all of these

What is the definition of fission?

Which of these forces could slow a moving baseball down A. applied force only B. gravitational forces only C. applied, frictional, gravitational forces

Magnetic induction is used for what?

A 4.20x10^3 kg delivery truck begins to roll back down a hill that is sloped at a 25.0 degrees angle with the horizontal. An average friction force of 4.00x10^3 N impedes the cars motion so that the cars speed at the bottom is 5.60 m/s.

Hich of the following needs is an addition to Maslow's original hierarchy and only appears in the eight-stage revised model

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.