Removing heat from a system changes the internal energy of the system. Which scenario correctly represents this case?

A.) placing a bowl of ice cubes in a closed room

B.) adding ice cubes into a thermos of hot coffee

C.) switching on the air conditioning of a closed room

D.) placing a thermos with hot coffee in an air conditioned room

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

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

What’s #16 asking me and how do i solve it?