Physics, 16.06.2021 19:40 dakotacsey03
A string is wrapped several times around the rim of a small hoop with a radius of 0.0800 m and a mass of 0.170 kg. The free end of the string is held in place and the hoop is released from rest . Calculate the angular speed of the rotating hoop after it has descended 0.750 m
Answers: 1
Physics, 22.06.2019 06:30
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
Physics, 23.06.2019 03:10
You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move
Answers: 1
Physics, 23.06.2019 10:30
Abig box of sausages (30 kg) are lifted from the ground to the top shelf of the freezer. if the box is lifted at a constant speed, a distance of 1.75 m, what work is done by gravity?
Answers: 1
A string is wrapped several times around the rim of a small hoop with a radius of 0.0800 m and a mas...
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