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A heat loss of 20 kJ/kg occurs during the process. Neglecting kinetic energy changes, determine the power input required for a mass flow rate of 90 kg/min.
Determine the current supplied if the final temperature is 70C. Also, show the process on a T-v diagram with respect to the saturation lines.
Determine the temperature of the air at the compressor exit. The heat transfer in kJ/kg of air flowing. Sketch the process on a p-v and T-s diagrams and indicate the work and heat transfers.
The walls of the tank are constructed of 5-cm-thick urethane insulation sandwiched between two metal sheets of negligible thinkness. Determine the amount of milk in the tank in kg and in gallons.
The pipe is 500 feet long, contains two 1-ft-radius bends and a fully open gate valve, and the entrance is square edged. Calculate the flow rate if the depth of water in the storage tank is 60.2 fee
If the pipe diameter is 30 cm, compare the head loss calculated from (a) the Darcy-Weisbach equation, (b) the Hazen-Williams equation, and (c) the Manning equation.
The flow rate is 80 liters per second, and pressure is constant throughout the length of the pipe. Determine the slope of the pipe. Assume minor losses are negligible.
The collar at A can freely slide in the y-direction, and can freely rotate about the y-axis. When point B is subjected to a vertical force of 18 lb, determine tension in the cable, and all reaction
Determine the transient motion of the damped mass-spring system. Determine the steady periodic oscillations of the damped mass-spring system.
Check if this velocity field satisfy the continuity equation, and why? If it satisfies the continuity equation, then calculate the pressure as a function of x and y.
The outlet area and velocity are 0.01 ft2 and 10 ft/s, respectively, and the inlet velocity is 50 f/s. Determine the inlet area and mass flow rate.
Calculate the surface concentration of carbon in units of kg carbon per m3 of the alloy. Assume that the alloy has a density of 7.87 g/cc for that calculation.
At that temperature, the atomic radii of iron atoms in the two structures are 1.26 and 1.29 Angstroms, respectively. Calculate the percent volume change as the structure changes from bcc to fcc.
If the impact force varies with time as shown in the plot, determine the magnitude of the linear impulse delivered by the mallet to the plug.
The wheel roles without slipping such that at the instant shown it has an angular velocity and angular acceleration. Determine the velocity and acceleration of point B on the rod at this instant.
Determine the velocity of on the outer rim of the spool at the instant shown when the cable is pulled to the right with a velocity of v. the spool rolls without slipping.
Determine the current supplied if the final temperature is 70oC. Also, show the process on a T-v diagram with respect to the saturation lines.
If the specific heat of brass (C) is 0.385 kJ/kg.K, determine the rate at which heat needs to be removed from the water in order to keep its temperature constant at 50°C.
A syringe has diameter d= 4 cm and its piston is pressed with the force F = 30 N. Find the maximum velocity of the water streaming from the syringe needle.
There are 18 turns in the primary coil and 20 turns in the secondary coil. The peak voltage across the resistor is 60.5 V. What is the peak emf of the generator?
A vacuum cleaner is plugged into a 120.0-V socket and uses 3.6 A of current in normal operation when the back emf generated by the electric motor is 82.0 V.
Through what angle must the door rotate so that the magnetic flux that passes through it decreases from its maximum value to 0.26 of its maximum value?
The same net magnetic flux passes through the second surface. (a) Determine the area of the first surface. m2 (b) Find the smallest possible value for the area of the second surface. m2
You think this is a polytropic compression process. Write and solve a thermodynamics problem to determine the polytropic exponent for this process.
Kinetic and potential energy changes from inlet to exit can be neglected. Determine the compressor power, in hp, and the volumetric flow rate at the exit, in ft^3/min.