Asmall 0.14 kg metal ball is tied to a very light (essentially massless) string that is 0.9 m long. the string is attached to the ceiling so as to form a pendulum. the pendulum is set into motion by releasing it from rest at an angle of 55 ∘ with the vertical.(a) what is the speed of the ball when it reaches the bottom of the arc? (b) what is the centripetal acceleration of the ball at this point? (c) what is the tension in the string at this point?
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Physics, 22.06.2019 10:00
There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.
Answers: 1
Physics, 22.06.2019 18:50
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
Physics, 22.06.2019 22:10
M1 = 2.8 kg, m2 = 6.72 kg, m3 = 11.2 kg, byas in .is ,is .toof m3 it 0.91 m. (in m/s)
Answers: 3
Asmall 0.14 kg metal ball is tied to a very light (essentially massless) string that is 0.9 m long....
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