A pendulum of mass 0.8 kg has 20 joules of potential energy at the top of its path. It's kinetic energy at the bottom of its swing is:

A. 80J

B. 20J

C. 40J

D. 10J

Because of the structure of the electron cloud, as particles were radiated onto a gold atom, what was observed during Rutherford's experiment? a. Electron cloud absorbed the particles b. Particles that struck the nucleus went straight c.

Rank the pressure from highest to lowest (a) bottom of a 20-cm tall container of salt water, (b) bottom of a 20 cm-tall container of fresh water, and (c) bottom of a 5-cm tall container of mercury

A container of gas is at a pressure of 3.7 * 105 Pa How much work is done by the gas if its volume expands by 1.6 m3?

Forces Unit Instruction Active Calculating Acceleration of a Train Until a train is a safe distance from the station it must travel at 5 m/s. Once the train is on open track it can speed up to 45 m/s.

Compare the frequency of an electromagnetic wave with the frequency of the vibrating charge that produces the wave.

What an object is made up of and the color of light that strikes it determine the A) apparent color of object B) transparency of the object C) opacity of the object D) translucence of the object

This chart shows characteristics of three different types of waves.

Which of the following statements about Boyle's law are correct? The temperature and pressure must remain constant for the law to apply. The temperature and the number of molecules must remain constant for the law to apply.

Exposure to high energy electromagnetic radiation such as waves can cause cancer sterility and death

What kind of error would result if you read the liquid volume where the liquid touches the wall of the cylinder rather than at the meniscus