The liquid mercury in a thermometer expands as it is heated. this is a ...

change of state.

change of form.

chemical change.

physical change.

Identify which phase of matter would transmit light waves the fastest, and why? A) The gas would transmit the fastest because the particles move the fastest. B) The solid would transmit the fastest because the particles are closest together.

The positions of a satellite in elliptical orbit are indicated. Rank these quantities from greatest to least: Gravitational Force A) Speed B) KE C) PE D) momentum

What are the pros and cons of gas power plants

An object is tossed upwards with the same inital velocity on the earth then on the moon. Will the maximum height reached be: grater on the earth b) greater in the moon c) the same as on the earth and the moon.

Each diagram shows a single experimental trial in which you will drop a ball from some height. in each case, the ball's size, mass, and height are labeled.

A glass window is a clear object that light passes through as it travels in a straight line. This is a good example of A. refraction of light. B. transmission of light. C. absorption of light. D. reflection of light.

Why is net force a vector sum A. All forces have direction and magnitude B. Forces can only be attractive C. All forces are contact forces D. There are four fundamental forces

Does the elf owl's small size allow it to live in cacti

If grapefruit juice has a ph of 3.0 and egg white have a ph of 8.0, which contains more h + ions? how many more?

Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e. What is the wavelength,? Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e.