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Torque is transferred through two shafts by means of gears. If the diameters of gears B and C are in the ratio 1:2, what should the ratio of shaft diameters be so that both shafts have the same shear stress?
The copper pipe has an outer diameter of 2.50 in. and an inner diameter of 2.30 in. if the allowable shear stress in the pipe is 2 ksi, what portion of the tube needs to be reinforced
In 2003 at Holloman Air Force Base in New Mexico, test engineers set a world record by moving 192 lb payload at 6,453 miles per hour in a rocket sled. The rocket sled track, built in 1954, is 15.44 km in length.
a new space age development corporation in wichita kansas has borrowed a sum of $4M from a friendly bank at an interest rate of 9%. the company has also borrowed another $1M from other sources at an interest rate of 8%.
What uniform annual series of cash flows over a 12-year period is equivalent to an investment of $5,000 at t= 0, followed by receipts of $600 per year for 11 years and a final receipt of $1,600 at t= 12 of the investor's time value of money is 6% ..
A 1.50 L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate the pH of the solution after the addition of 0.0500 moles of solid NaOH. Assume no volume change upon the addition of base. The Ka for HF is 3.5 x 10-4.
the pin at B is attached to member ABC and can slide freely along the slot cut in the fixed plate. Neglecting the effect of friction, determine the couple M required to hold the system in equilibrium when.
The annual rainfall in basin follows a normal distribution with the mean value of 80 cm and standard deviation of 10 cm. What is the probability that annual rainfall exceeds 100 cm in any year
A hawk flying at 2 m/s at an altitude of 45 m accidentally drops its prey. The parabolic trajectory of the falling prey is described by the equation below until it hits the ground, where y is its height above the ground and x is its horizontal dis..
Determine the maximum displacement of the plate A if the billet strikes the plate with a speed of 8 . Neglect the mass of the springs, rollers and the plates A and B. Take = 4000 , = 40000 .
A tray rests on an extendible arm consisting of two steel tubes with two different outer diameters. The downward force at the tray center F0 = 1000 N. Determine the downward deflection of the tray center and the tilt angles of the tray about each ..
The frame shown is used to support high-tension wires. If W = 200 lb, b = 3 ft, a = 30°, what is the axial force in member HJ?
The search light is rotating at a constant rate of 4 rad per second. Find the magnitude of the velocity and acceleration of the spot of light on the wall when the search light beam makes a 45 degree angle with the wall.
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