When is work done? A. When a man pushes a box but it does not move.
B. When a man pushes a box 5 m.
C. When a man pushes a box o meters.
D. When a force is applied to a box, but it does not move.

Ms. hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.