Physics, 15.01.2020 19:31, straightbarz4643
Achild is pushing a playground merry-go-round. the angle through which the merry-go-round has turned varies with time according to θ(t)=γt+βt3, where γ=0.400rad/s and β=0.0120rad/s3.
part a calculate the angular velocity of the merry-go-round as a function of time. express your answer in radians per second in terms of γ, β, and t. ω(t) = rad/sec
part part b what is the initial value ω0 of the angular velocity? express your answer in radians per second. ω0 = rad/s
part c calculate the instantaneous value of the angular velocity ω(t) at time t=5.00s. express your answer in radians per second. ω(5.00) = rad/s
part d calculate the average angular velocity ωav for the time interval t=0 to t=5.00 seconds. express your answer in radians per second. ωav = rad/s
Answers: 3
Physics, 22.06.2019 13:40, crayons18
An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
Answers: 2
Physics, 22.06.2019 18:30, justhereforanswers13
Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.
Answers: 1
Physics, 22.06.2019 21:40, Unicorn66y
Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.
Answers: 1
Achild is pushing a playground merry-go-round. the angle through which the merry-go-round has turned...
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