Physics, 23.03.2020 17:56 clarajeansonels9987
A man pushes on a piano with mass 190 kgkg ; it slides at constant velocity down a ramp that is inclined at 18.0 ββ above the horizontal floor. Neglect any friction acting on the piano. Calculate the magnitude of the force applied by the man if he pushes
(a) parallel to the incline and
(b) parallel to the floor.
Answers: 1
Physics, 22.06.2019 16:30
The air in an automobile tire with a volume of 2.60 ft3 is at 70Β°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ftβ
lbflbmβ
r(1 psia144 lbf/ft2) = 0.3704 psiaβ
ft3lbmβ
r the amount of air that must be added to raise the pressure is lbm
Answers: 3
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Suppose two stars are located in region a of the h-r diagram shown in the figure below. star c appears much dimmer than star y as seen from earth. which star can be inferred to be nearer to earth and how do you know?
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A man pushes on a piano with mass 190 kgkg ; it slides at constant velocity down a ramp that is incl...
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