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An airplane wing modeled as a spring-mass system with natural frequency 40 Hz is driven harmonically by the rotation of its engines at 39.9 Hz. Calculate the natural frequency and the driving frequency of the system.
A solenoid 2.8 m long has a radius of 0.85 cm and 660 turns. It carries a current I of 2.5 A. What is the approximate magnetic field B on the axis of the solenoid?
Sketch the fully annotated velocity triangles for a Parsons turbine stage. Use your sketch to show that the specific work produced per stage is given as w_stage = (C_b)^2 [1 + 2(f/C_b)(cot(B_1))].
No heat interactions with the environment are allowed. You do not need to describe the details of the process that produces the maximum work, but you do need to describe the final state of the blocks fully.
A) A huge reservoir of air supplies a converging-diverging nozzle with throat and exit areas of 10 cm^2 and 25 cm^2 respectively. The reservoir pressure and temperature are 150 kPa and 20C. Determine the range of back pressure over which
A piston -cylinder device contains 0.06 m3 of saturated water vapor at 350 KPa pressure. Determine the temperature and the mass of the vapor inside the cylinder.
both a gage and a manometer are attached to a gas tank to measure its pressure. if the reading on the pressure gage is
Coal discharged from a dump truck with an initial velocity (v)= 1.8m/s at 50 degrees falls on conveyor belt B. Determine the required velocity v(B) of the belt if the relative velocity with which the coal hits the belt is to be vertical.
to conserve water and energy a flow reducer is installed in the shower head shown here. if the pressure at point 1
the hybrid vehicle engine produces an average of 25 kw of power output and has an efficiency of 65. assume it runs 200
finding the time interval for the motorcyclist to reach a given acceleration if the motorcyclist starts from rest
260-pound weight is supported by two ropes, one forming a 40 degree angle with the ceiling and the other a 50 degree. Find the tension in each rope.
nitrogen gas at 60 kpa and 7 degrees celsius enter an adiabatic diffuser steadily with a velocity of 195 ms and leaves
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