Which particles make up the nucleus of an atom?

A.

protons and electrons

B.

neutrons and electrons

protons only

protons and neutrons

E. neutrons only

What activates a convection current starting the flow of liquid

Can a balanced force move?

What happens when a wave hits a boundary?

Two identical positive charges exert a repulsive force of 6.1 * 10-9 n when separated by a distance 3.6 * 10-10 m. calculate the charge of each. the coulomb constant is 8.98755 * 109 n · m2 / c 2. answer in units of c.

When you are watching TV, what is the main form of energy being used? Question 14 options: Nuclear Chemical Mechanical Electrical

The force of friction on a sliding object is 10n. the applied force needed to maintain a constant velocity is:

Which of the following methods of improving air quality does not require advanced technology?

When two waves with the same amplitude overlap so that a crest lines up with a trough, the resulting wave ...

Suppose the Sun suddenly stopped emitting light. How long would it take, in seconds, for the Sun's light to disappear on Earth? (Hint: The Sun is an average of 150 million km from Earth).

Do you think companies should be required to disclose ingredients in their chemicals if there are environmental concerns. Explain why or why not. Use at least three pieces of evidence.