An old teacher runs across the floor with a velocity of 0.5 m/s (he's slowing down) with a mass
of 80 kg.

a. How much KE does he have now?

b. what is the weight of the old teacher

Why don't you see your reflection in water with waves or repples

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.