When galaxies move away from us they appear to have a "red shift" in color. Explain why this happens.

2. What characteristics of a planet determine the strength of its gravitational force on other objects?

What is a system in science this is my last question

A coffee-maker contains a heating element that has a resistance of 28 Ï. this heating element is energized by a 120-v outlet. what is the current in the heating element?

A human hair is approximately 50 um in diameter. Express this diameter in meters.

How are sound energy and light energy similar? A. They both need a medium to travel through. B. They both have a wavelength and a frequency. C. They are both kinds of mechanical energy. D. They are both carried from place to place by particles.

A bowling ball is pushed with a force of 22.0N and accerlates at 5.5 m/s square. What is the mass of the bowling ball A - 4.0 kg B-0.25 kg C-25 kg D-4.00 kg

How to eat butter. I want to know how you all eat the butter.

What is the transfer of heat through a solid as a result of molecular action called? radiation convection conduction magnetism?

Explain the process of synaptic transmission, beginning with the neurotransmitters at the axon terminal of the presynaptic cell and ending with the impulse being sent down the postsynaptic cell.

Which of the following is a false statement about dispersion forces? View Available Hint (s) Which of the following is a false statement about dispersion forces?