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To apply shock loading to an artillery shell, a 20-kg pendulum A is released from a known hight and strikes impactor B at a known velocity Vo. inpactor B then strikes the 1-kg artillery shell C.
The 30-Mg freight car A and 15-Mg freight car B are moving toward each other with the velocities VA= 20 km/h to the right and VB= 10 km/h to the left. the spring constant on car A is k= 3MN/m.
A 6.22-kg object passes through the origin at time t = 0 such that its x component of velocity is 5.45 m/s and its y component of velocity is -2.88 m/s. (a) What is the kinetic energy of the object
If the mean and variance of discrete random uniform random variable X, are E(X) and V(X) respectively, what would the mean and variance of cX be in terms of E(X) and V(X) if c is a constant
what would be the estimated total annual dollar savings of a company with an annual direct labor payroll of 2,500,000 and a fixed overhead rate of 150 percent of direct labor , if the company initia
A truck is traveling down a road with a 3-percent grade at a speed of 55 mi/h when the brakes are applied. Knowing the coefficients of friction between the load and the flatbed trailer (us= 0.40) an
A 2500-lb automobile is moving at a speed of 60 mi/h when the brakes are fully applied, causing all four wheels to skid. Determine the time required to stop the automobile (a) on dry payment (u=0.75
You are paying into a mututal fund that earns 6% compound interest. If you are making an annual contribution of $10000, how much will be in the funds in 20 years What if the fund makes 10% What if i
A speedboat on hydrofoils is moving at 20 m/s in a freshwater lake. Each hydrofoil is 3 m below the surface. Assuming, as an apporximation, frictionless, incompressible flow, find the stagnation pre
If the pulleys are fixed to the shaft, determine the magnitude of the tension T and the x,y,z componenet sof reaction at the smooth thrust bearing A and smooth journal bearing B.
what is the significance of the (a) compressive strength of concrete, (b) splitting tensile strength, and (c) flexural strength of concrete
The story: The Civil Engineering Department would like to have solar panels installed on the roof of Ghausi Hall to supply some of its electricity use - after all there is plenty of space on the roo
Your job as a Highway Patrol Officer is to place a sign to ‘Slow Down' on the freeway prior to a major construction site. The posted freeway speed is 65 mph and a speed of 35 mph is required t
A tank with a 3m diameter has an 8 cm orifice at the bottom. The tank is currently filled with water to a height of 2.5m above the orifice. If the orifice is opened, how long will it take until the
An air compressor is used to pressurize a cylindrical tank which contains air at atmospheric pressure. The tank's diameter is 3 ft and it is 5 ft long. The supply line is 1 inch in diameter.
A centrifugal water pump has an impeller with r1 = 4", r2 = 12", f1 = 160°, f2 = 170°. The impeller is 2" wide at the inlet end and ¾" at the outlet. For a speed of 1800 rpm, neglecti
A Brayton cycle with a regenerator uses air as the working fluid. The air enters the compressor at 283K and 0.1 MPa. The highest temperature in the cycle is 1073K and the pressure ratio across the c
Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 42.1* and 48.9*, respectively, with the tensile axis.
groundwater is pumped for domestic use from an unconfined aquifer. the thickness of the clay is 40%. after 10 years of pumping, the porosity is reduced to 30%. determine the subsidence of the clay
Calculate the time average F of the total force tangent to the toad exerted on the tires during the 8 s. Treat the car as a particle and neglect air resistance.
The Pomdeterra wastewater treatment plant produces a thick sludge that has a suspended solids concentration of 3.8%. They are investigating a filter press that will yield a solids concentration of 2
Cars arrive at a toll gate on a freeway according to a Poisson distribution with mean 90 per hour. Average time for passing through the gate is 38 seconds. Drivers complain of the longwaiting time.
A 68 kg woman is planning to bicycle for an hour. If she is to meet her entire energy needs while bicycling by eating 30 g chocolate candy bars, determine how many candy bars she needs to take with
The Metrodome's inflatable roof covers 10.0 acres and its interior volume is 60.0x10^3 cubic feet. During construction, 40.0x10^3 cubic yards of concrete, 11.9x10^3 tons of reinforcing steel, and 5.
A person who retires at age 62 can receive Social Security benefits of $1537 per month, but by waiting for the full retirement age of 66, the person will receive $2057 per month.