Do rolling down a grassy hill has kinetic energy or potential energy

An electron enters a region of uniform perpendicular en and bn fields. it is observed that thevelocity nv of the electron is unaffected. a possible explanation is:

What forms of light can be observed with telescopes at sea level?

Certain gases in the atmosphere trap heat on Earth. What is the name of this phenomenon? A.) the greenhouse effect B.) global warming C.) glacial melting D.) cooling period

Alcohol begins to affect your brain when

The table shows results from an experiment in which objects made up of different materials are rubbed with each other.

Ursa Minor contains the pole star, Polaris, and the asterism known as the Little Dipper. From most locations in the Northern Hemisphere, all of the stars in Ursa Minor are circumpolar.

What is an organism ability to maintain a steady internal condition called

What is the fundamental frequency of a particular medium?. a. the lowest frequency at which a standing wave is possible. b. the highest frequency at which s standing wave is possible

The distance from the inner core to the surface of the earth is about 5,200 kilometers. the large amount of material surrounding the inner core places tremendous pressure on it.

What type of wave is sound? longitudinal light surface transversal