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Heat transfer from the compressor to the surroundings occurs at a rate of 180 KJ/min, Assuming an ideal gas, find the power input to the compressor in kW.
Two support rods hold the shelf each rod as a diameter of 12.00mm the center of gravity of the crates is the middle of the shelf. Compute the stress in the middle of the rods.
Determine the angular speed of the object (in rpm): Determine the linear speed v of the object: Determine the tension T in the string.
The coefficient of kinetic friction between B and C is 2.0, determine (a) the velocity of the bullet and B after the first impact, (b) the final velocity of the carrier.
The tension in the middle vertical cable is 136N. Determine the tension in the other two support cables. One of the cables has a 15 degree angle and the other has a 40 degree angle.
Can you explain what happened, by eventually using a shear-force and bending moment diagram and the flexure formula?
Glycerin at 50 degrees F flows over a flat plate at free stream velocity of 6 ft/s. Determine the velocity and thermal boundary layer thickness 0.5 ft from the leading edge of the plate.
Your favorite physics book (total mass 2.4kg) is pushed across the floor at a constant speed by a force of F=26N at an angle of -42 degrees (aiming downward 42 degrees below the horizontal).
Determine the persons mass: b) Explain what would happen if the elevator was accelerating downward such that A is greater than or equal g: Justify your answer via newtons laws.
What is the composition of the gas in terms of mass fractions? What is the composition of the gas in terms of volume fractions?
A flywheel has its angular speed increased uniformly from 16rad/s to 70rad/s in 74s. If the flywheel has a diameter of 2 ft, determine the magnitude of the normal and tangential components of accel
Determine the final air pressure and temperature, and the final position of the piston (i.e. the distance between the bottom of the cylinder and the bottom of the piston, in the final state).
A tank contains 0.05m^3 of Nitrogen (R=0.2968kj/kg*k) at T=-21 degrees Celcius and P=10MPa. Assume a non-ideal gas. Find the mass of Nitrogen using data from the compressibility chart.
Water at 3 MPa and 160 degree C is produced from water at 2. 5 MPa and 40 degree C in an irreversible process at a rate of 5. 6 kg/s. Find the rate of entropy change of the process (kW/K).
The engine produces 75 kW of power and rejects heat into the cold reservoir at a rate of 9 kW. (a) Find the efficiency of the heat engine, (b) Is the engine reversible?
A heat engine of 30% thermal efficiency drives a refrigerator having a coefficient of performance of 4. Determine the ratio of the heat input to the engine to the heat remove from the cold body by
Consider a waterfall having a drop of 84.7m. (a) Determine the specific potential energy (J/kg) of the water at the top of the falls with respect to the base of the falls.
The work input to a steady flow water pump is 4500 J/kg, with the water entering the pump at 1 bar and 30C. Determine the exit pressure if the fluid temperature increases by 0.1 C during the process.
Determine the capacity of the steam-generating unit in MW using the expression of steady state, steady flow conservation of energy.
Write an expression for the heat transfer rate per unit length, Q/L, between the pipe surface temperature and the outer insulation surface temperature.
What is the tolerable tensile load, in N, to avoid catastrophic failure? The panel is 200 mm in width, 2 mm in thickness. The geometry correction factor is 1.0 for internal cracks, 1.1 for surface c
The mass flow rate is 0.1 kg/s. If the compressor power input is 77 kW, determine the rate of heat transfer between the compressor and its surroundings, in kW. Neglect kinetic and potential energy e
If the process is isentropic determine the exit pressure in kPa. Also, determine the exit pressure if the fluid temperature increases by 0.1 C during the process.
Find: a) the net actual work, b) the isentropic efficiency of the turbine, c) the ideal Rankine thermal efficiency, d) the actual Rankine thermal efficiency, and e) the relative efficiency.
The inlet temperature is 25 C and it exhausts to the room at 100 kPa. What is the necessary inlet pressure and the exhaust temperature of the air? Assume the turbine is adiabatic and air has constan