Ablock of ice with mass 2 kg slides 0.750 m down an inclined plane that slopes downward at an angle of 36.9◦ below the horizontal. if the block of ice starts from rest, what is it’s final speed? you can ignore friction. work this problem two ways: with the work-energy theorem and using conservation of energy.
Answers: 3
Physics, 22.06.2019 11:00
Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide? kg • what must the total momentum of the system be after the train cars collide? kg •
Answers: 2
Physics, 22.06.2019 13:00
Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.
Answers: 2
Ablock of ice with mass 2 kg slides 0.750 m down an inclined plane that slopes downward at an angle...
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