Physics, 29.01.2020 02:40 hollybell1213
Which of the following scenarios describes an object being acted on by a conservative force?
a woman hikes up a mountain to a point 20 feet above ground.
a dishwasher was pulled up to a window by a rope, using a pulley system.
a feather falls from one end of a tube to the other inside a vacuum.
a puck glides across and slowly comes to a stop on an ice rink.
Answers: 2
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Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k
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Physics, 22.06.2019 07:30
Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right
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Physics, 22.06.2019 16:40
Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel
Answers: 3
Physics, 22.06.2019 18:00
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
Which of the following scenarios describes an object being acted on by a conservative force?
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