What is the maximum energy that can be transferred to an electron in a hard collision by a 25 mev
a) electron (according to convention)
b) positron
c) proton
d) alpha particle

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

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?

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?