Select the correct answer,
Consider an atom that has an electron in an excited state. The electron falls to a lower energy level. What etteat does that have on the electron
A
B.
The electron releases energy in the form of light
The electron absorbs energy in the form of light
The electron retains its energy without any change,
The electron transfers its energy to other electrons.
C.
D.

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

Which feature indicates that mars resides in the inner region of the solar system

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?