Why is only a portion of the sun's electromagnetic radiation that is directed toward Earth able to reach Earth's surface? The atmosphere of Earth filters a portion of the radiation
A portion of the radiation is absorbed by the planets closer to the sun.
The gravitational pull of the sun prevents the release of a portion of the radiation
A portion of the radiation is absorbed by the moon as it revolves around Earth.

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging

What is an example of static friction