Wich subatomic particles will you add or remove to change the mass of an atom? A) electrons and protons B) protons or neutrons C) electrons or neutrons D) Electrons only

What must you do before you make a hypothesis? a) Run the experiment b) Research information about your question. c) Form a theory. d) Draw conclusions

Which are characteristics of natural selection? Check all that apply. It affects populations. It affects only individuals. It occurs when there is genetic variation. It occurs when organisms are genetically identical.

1. If a fast-moving car making a loud noise approaches and moves past the person, what will happen as the distance between the two increases? A. The pitch of the sound being heard by the person will appear to be lower than the pitch of the source. B.

A piece of purple plastic is charged with 8.23 * 10 6 extra electrons compared to its neutral state. What is its net electric charge (including its sign) in coulombs? net electric charge:

A 24-g rifle bullet traveling 280 m/s buries itself in a 3.7-kg pendulum hanging on a 2.8-m-long string, which makes the pendulum swing upward in an arc. Part A Determine the vertical and horizontal components of the pendulum's maximum displacement.

For a cars speedometer what is the calculated speed over an entire trip

How does gravity influence our annual calendar?

A 0.500 kg block is sitting on a horizontal, frictionless surface. The block is connected to a horizontal spring with a force constant of 124 N/m. The other end of the horizontal spring rests against a wall. When a 100.

The velocity of waves in a ripple tank of a particular depth of water is 20 centimeters per second, and standing waves are produced with nodes spaced 2.0 centimeters apart. what is the frequency of the wave generator?

If a wave is generated in a Slinky and the wave hits a wall, the reflected wave will be