Physics, 21.09.2019 02:20 stevensquad638
Agas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume relation is pv1.1 = constant. the mass of the gas is 0.4 lb and the following data are known: p1 = 160 lbf/in.2, v1 = 1 ft3, and p2 = 390 lbf/in.2 during the process, heat transfer from the gas is 2.1 btu. kinetic and potential energy effects are negligible. determine the change in specific internal energy of the gas, in btu/lb.
Answers: 3
Physics, 22.06.2019 14:00
Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
Answers: 1
Physics, 22.06.2019 14:00
Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car
Answers: 1
Physics, 22.06.2019 18:30
Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?
Answers: 3
Physics, 22.06.2019 21:30
Which of the following best describes the circuit shown below?
Answers: 3
Agas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume rel...
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