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A 2in-diameter steel propeller shaft of an experimental high-speed boat transmits 2500hp at 2000rpm. Bending and axial loads are negligible. a) What is the nominal shear stress at the surface? b)If a hollow shaft of inside diameter .9 times outside diameter is used, what outside diameter would be required to give the same outer surface stress? c) How do the weights of the solid and hollow shafts compare?
saturated water vapor is enclosed in a piston cylinder arrangement with a volume v initial 5 liters at a temperature
In a tubular low pressure chemical vapor deposition (LPCVD) reactor, gas is introduced at one end at a rate of 75 torr-L/min. At the other end is a vacuum pump of a speed Sp. If the reactor must operate at 1 torr, what value of Sp is required?
A linear isotropic material has the shear modulus of elasticity G of 11.5*10^6 psi and the Poisson's constant v of 0.3.
Determine heat flow, Heat flow through a uniform wall will: a) increase as the thermal resistance increases b) increase as the thickness of the wall increases
an ice chest is constructed of styrofoam k 0.033 wm?c with inside dimensions of 25 by 40 by 100 cm. the wall thickness
A typical gas stove burner supplies a kettle filled with water at a rate of 15,000 Btu/hr with a flame temperature of 750C
a 10-lb block b rests as shown on a 20-lb bracket a. the coefficients of friction are us0.3 and uk0.25 between block b
The heat transfer coefficient in the oven is 25W/m^2K. Calculate rate of heat transfer per m^2 area.
It is necessary to design a square-section composite bar that will withstand an applied load without deflecting more than a specified amount.The design specification for the bar, including its dimensions and loading criteria, is given below.
Calculate reactions of a simply supported continuous beam. A beam is simply supported at the ends and is continuous over two spans.
A hydraulic shear applies 2000 lb force to a wedge. It is used to shear plate steel to rough size. The shear has a 1/4 inch thick cutting blade with a 45 degree slope. What is the ideal mechanical advantage of the wedge?
Determine the maximum speed at which the car with mass can pass over the top point A of the vertical curved road and still maintain contact with the road.
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