Physics, 01.10.2019 08:30, jessejames48
The length of an aluminium bar of lenth 80cm increase by 1mm on heating. what is the final temperature of the bar if it was initially at temperature 20°c? ( given: coefficient of linear expansion of aluminium = 25×10-6/° c)
Answers: 1
Physics, 22.06.2019 05:30, trevorhenyan51
Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?
Answers: 2
Physics, 22.06.2019 05:30, kaitlynmoore42
James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the
Answers: 1
Physics, 22.06.2019 06:30, jordanbyrd33
Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
Answers: 1
The length of an aluminium bar of lenth 80cm increase by 1mm on heating. what is the final temperatu...
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