Physics, 02.02.2020 21:42 hamzzaqasim44
Two ice skaters, daniel (mass 60.0 kg ) and rebecca (mass 45.0 kg ), are practicing. daniel stops to tie his shoelace and, while at rest, is struck by rebecca, who is moving at 14.0 m/s before she collides with him. after the collision, rebecca has a velocity of magnitude 6.00 m/s at an angle of 55.1 ∘ from her initial direction. both skaters move on the frictionless, horizontal surface of the rink.
a) what is the magnitude of daniel's velocity after the collision?
b) what is the direction of daniel's velocity after the collision?
Answers: 2
Physics, 22.06.2019 06:30, jordanbyrd33
Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
Answers: 1
Physics, 22.06.2019 14:30, samehajamal1234567
When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?
Answers: 3
Two ice skaters, daniel (mass 60.0 kg ) and rebecca (mass 45.0 kg ), are practicing. daniel stops to...
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