Physics, 18.05.2021 22:30 kprincess16r
The machine produces standing waves on a string. Without touching the dial of the machine, I loosen the string, decreasing the speed of waves on the string. Will the wavelength get bigger or smaller?
Justify your answer with an equation Requires: . An answer to the question • A sentence explaining which variable doesn't change, and how you know • The equation written with appropriate arrows
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Answers: 2
Physics, 21.06.2019 17:20
The momentum of an isolated system is conserved a) only in inelastic collisions. b) only in elastic collisions. c) in both elastic and inelastic collisions
Answers: 2
Physics, 22.06.2019 10:40
As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
Answers: 1
The machine produces standing waves on a string. Without touching the dial of the machine, I loosen...
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