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Two kg of propane are initially saturated liquid at 0 C. It undergoes an isentropic process that cools it to -40C.
a) What is the volume after the cooling?
b) If it is subsequently heated at constant volume until its pressure is 4 bar, what is its quality after this heating?
c) What temperature and entropy is obtained at this final state?
To a person swimming 0.790m beneath the surface of the water in a swimming pool, what is the actual height of the diving board above the surface of the water
Illustrate what is the magnitude of the net torque on the wheel due to these three forces for an axis perpendicular to the wheel and passing through its center?
A gold wire 5.72 long and of diameter 0.850 carries a current of 1.19. Find the resistance of this wire
You pull downward with a force of 30N on a rope that passes over a disk-shaped pulley of mass 1.2kg and radius 0.075m, Find the linear acceleration of the 0.69kg mass.
A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.5 m/s and then has the similar kinetic energy as the son.
The velocity of a ball changes from ‹ 9, ?7, 0 › m/s to ‹ 8.96, ?7.14, 0 › m/s in 0.02 s, What is the rate of change of momentum of the ball
A cylindrical tank 8 m in diameter is constructed of sheet iron 1.0 mm thick. The tank contains 2.3 m of water overlying 1.2 m of mud, Calculate the maximum stress in the tank
You have been given a long lenght of wire. You measure the resistance of the wire, What is the resistance of one of those sections
The reflected sound is afterwards mixed with the transmitted sound, and 85 beats per second are detected. The speed of sound in body tissue is 1520m/s. compute the speed of the fetal heart wall at the instant this measurement is made.
When you jog, most of the food energy you burn above your basal metabolic rate (BMR) ends up as internal energy, Determine the amount of water you lose to evaporation when running for 31 minutes at a rate that uses 400 kcal/h above your BMR
Two very small objects, whose charges are +1.0 and -1.0 C, Find the magnitude of the attractive force that either charge exerts on the other
Two blocks with mass m1=2kg and m2=3kg hang on either side of a pulley. Block m is on an incline at 30 degrees, Find the maximum extension of the spring.
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