Physics, 23.03.2020 22:35 romaguera06
You are performing a knee extension exercise. You hold a 20kg weight at full knee extension. The weight is 0.4m from your knee joint. What is the moment created by the weight about your knee? Ignore the mass of the leg. Include the units and the direction of the moment (i. e., positive for counterclockwise, negative for clockwise).
Answers: 2
Physics, 21.06.2019 22:30, cocodemain
A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?
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Physics, 22.06.2019 05:00, masie03
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
Answers: 1
You are performing a knee extension exercise. You hold a 20kg weight at full knee extension. The wei...
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