Physics, 12.08.2019 22:30 bcarri4073
Aphysics professor that doesn’t get easily embarrassed stands at the center of a frictionless turntable with arms outstretched and a 5.0-kg dumbbell in each hand. he is set rotating about the vertical axis, making one revolution in 2.0s. find his angular velocity if he pulls the dumbbells to his stomach. his moment of inertia (without the dumbbells) is 3.0 kg*m^2 with arms outstretched and 2.2 kg*m^2 with his hands at his stomach. the dumbbells are 1.0 m from the axis initially and 0.20 m at the end. how about kinetic energy before and after? explain from where this energy (if any) came from?
Answers: 1
Physics, 22.06.2019 05:40
Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?
Answers: 2
Physics, 22.06.2019 07:30
Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20
Answers: 1
Physics, 22.06.2019 09:10
The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island
Answers: 1
Aphysics professor that doesn’t get easily embarrassed stands at the center of a frictionless turnta...
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