Physics, 26.07.2019 04:20, hdhdhd49jdhd
Amodel airplane of mass 0.6 kg is attached to a horizontal string and flies in a horizontal circle of radius 6 m, making 1.6 revolutions every 5 s. (the weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.) the accelaration due to the gravity is 9.81 m/s2 . find the speed of the plane. answer in units of m/s.
Answers: 2
Physics, 22.06.2019 06:30, 1234fatimasm
What are similarities and differences between refraction, reflection, diffraction and absorption?
Answers: 3
Physics, 22.06.2019 18:50, rurbanok12
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
Amodel airplane of mass 0.6 kg is attached to a horizontal string and flies in a horizontal circle o...
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