How much potential energy does a 40-n medicine ball gain when it is lifted 5 m? select one:
a. 20 j
b. 100 j
c. 200 j
d. 1,000 j

How does convection affect our atmosphere? our layers of earth? our oceans?

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

From the perspective of an employee that effective channeling of work related information and concerns