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When r = 17ft , the car is moving on a horizontal circular path with a speed of 32ft/s . If the boom is shortened at a rate of 3ft/s , determine the speed of the car when r = 10ft.
The building is estimated to be losing heat at a rate of 118,572 kJ/h when the outside temperature drops to 4.2oC. Determine the minimum power required (kW) to drive the heat pump unit for this outs
Steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.896 and exits as a saturated liquid. Determine the volumetric flow rate (m3/s) of the steam entering the heat exchanger.
The temperature on the inner face is 25 degrees celcius, and the temperature on the outer face os 0 degrees celcius. How much heat per day is lost through the wall?
If the electric motor driving the pump has an efficiency of 85% and the cost of electricity is $0.10 per kW hour, find annual cost of electricity powering the system.
Air enters an adiabatic diffuser at 320 K and 100 kPa with a velocity of 642.9 m/s. At the diffuser exit, the temperature is 520 K. Determine the velocity (m/s) at the exit of the diffuser.
Saturated water vapor at 13.32 bar enters an insulated throttling valve which drops the pressure to 1.50 bar. Determine the temperature (oC) of the steam at the exit of the valve.
The average speed of blood leaving the left ventricle is 120 cm/s. Determine the difference in height between these two locations.
Determine the torque exerted on the 10mm long (high) inner cylinder. (The blood is filled to the top of the inner cylinder).
What can be concluded about Ixy if in addition to the first condition both moments of inertia are also equal to each other in another system of coordinates that is rotated by 45 degrees with respect
Determine the power needed to drive the pump if the pump isentropic efficiency is 87%. Also determine the outlet temperature of the water.
Determine the absolute pressure of the water at the ground level. Atmospheric pressure is 101.325 kPa. Acceleration due to gravity is 9.81 m/s2.
The gap between the two plates is h = 0.005 m. The fluid has a viscosity of 2 N-s/m2. Assume the fluid is Newtonian. Calculate the shear stress acting on the top and bottom surfaces (at y = 0 and y =
Hydrogen at 25 bar, 450°C enters an adiabatic turbine and expands to 2 bar, 160°C with a mass flow rate of 0.2 kg/s.
Determine (a) the temperature of the refrigerant exiting the compressor, in °C (b) the power input to the compressor, kW and (c) the rate of entropy production kW/K.
This member is to be designed according to maximum shear stress criterion, with a safety factor of 2. What is the minimum allowable cross-sectional dimension, b?
Determine the power (kW) for the compressor if the inlet volumetric flow rate is 0.178 m3/s. Use constant specific heats evaluated at 300 K.
At the exit, the pressure and quality are 200 kPa and 0.66, respectively. Determine the power produced (kW) by the turbine if the mass flow rate is 1.82 kg/s.
Some gamma rays with a total energy of 4 MeV. What is the second fission fragment, and what is the total kinetic energy of the two fission fragments.
This nuclide is produced by the endoergic reaction 16^O(n,p)16^N. What is the minimum energy of the neutron needed to produce 16^N?
During this process heat is transferred to the air from a reservoir having a temperature of 80C. Determine the amount of heat transferred to the air during the process (in kilojoules) and the work.
The platform oscillates with amplitude of 5mm. When the speed is 1000 rpm, the amplitude is 14 mm. Determine the natural frequency of the system and the spring constant of the frame.
Determine the volumetric flow rate of air entering the dryer if 4.5 kg/min of water must be removed from the product in the dryer.
A force of 10 lb is requred to maintain the spring in firing position when the length of the spring is 1 in. Determine (a) the velocity of the bullet as it leaves the gun, (b) the maximum height rea
Determine the time required for the motion to stop. What are the horizontal and vertical components of reaction which the pin at A exerts on AB durin this time? Neglect the mass of AB.