Physics, 26.11.2019 05:31 juliannabartra
Adiscus thrower accelerates a discus from rest to a speed of 25.3 m/s by whirling it through 1.29 rev. assume the discus moves on the arc of a circle 0.96 m in radius. a discus thrower moving in a circle as he prepares to throw the discus. (a) calculate the final angular speed of the discus. rad/s
Answers: 3
Physics, 22.06.2019 02:50
Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.
Answers: 3
Physics, 22.06.2019 07:10
Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?
Answers: 2
Physics, 22.06.2019 14:30
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
Adiscus thrower accelerates a discus from rest to a speed of 25.3 m/s by whirling it through 1.29 re...
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