calculati lucrul mecanic efectuat de forta F vectorial , aplicata unui solid ce se deplaseaza rectiliniu ,pe o distanta egala cu delta x=10 m . Forta are modulul de 20 N si directia ei se formeaza cu directia deplasarii unghiului alfa egal cu : 0,60 , 90 ,120,180 .Cand se efectueaza lucrul mecanic motor si cand se efectueaza lucrul mecanic rezistent?
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Physics, 22.06.2019 10:30, gyexisromero10
Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
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Physics, 22.06.2019 19:30, beth999
Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?
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calculati lucrul mecanic efectuat de forta F vectorial , aplicata unui solid ce se deplaseaza rectil...
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