An electron with a speed of 2.0 ´ 106 m/s moves into a uniform electric field of 500 N/C that is parallel to the electron’s motion. How long does it take to bring the electron to rest? (me = 9.11 ´ 10-31
kg, e = 1.6 ´ 10-19 C)
a. 2.3 ´ 10-8 s
b. 3.5 ´ 10-8 s
c. 1.2 ´ 10-7 s
d. 2.3 ´ 10-6 s

Which statement best explains why the overall charge on an atom is zero?

In which of the following can you not find plasma

Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)