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HAS SIZE 6,MEAN 8,VARIANCE 16 AND SAMPLE B:has size 10,mean 20 and variance 36 .calculate pooled sample variance
Office workers complain that the noise level in their office Area 1 is greater than that in the company's other office Area 2. Six measurements are made on different days in each area, with the following results
Niagra falls measures 160 feet in height. Based on reasonable assumptions estimate the change in entropy for the water from the top of the falls to the bottom in kJ/kg*K.
A 12-in. square concrete pile is driven into loose sand to a depth of 30 feet. Unit weight is 118 pcf, internal friction is 30 degrees. Find the pile's axial capacity if K is assumed to be 0.7 and the factor of safety is 2.
how far back from the front axle would the center of gravity have to be to ensure that the maximum tractive effort developed for front- and rear- wheel-drive options is equal (assume that all other variables are unchanged)
Force P is directed from point A(5,10,3) towards point B(1,-2,5) and has a magnitude of 15N. Vector Q=6i+2j-5k. When finding the projection of P onto Q what do you do with the 15N
A flowrate of 3.5 ft^3/s is to be maintained in a horizontal aluminum pipe ( E = 5 * 10 ^-6 ft). The inlet and outlet pressures are 65 psi and 30 psi, respectively, and the pipe length is 500ft. Determine the diameter of the pipe.
A tank containing acetone at 20 oC has a drain pipe connected vertically at the bottom. The pipe is made of galvanized iron, 0.5 in NPS Schedule 40 with length L= 2m. The acetone depth in the tank is H= 5 m.
A 4 X 12 (S4S) hem-fir timber beam carries a superimposed uniformly distributed load of 325 lb/ft on a simple span of 12ft. Determine the maximum bending stress and the maximum shear stress
Find the change in volume of 16.15 lb of water at ordinary atmospheric pressure for three conditions: Calculate each condition and note the trend.
Determine the bulk modulus of elasticity (in N/m^2) of a liquid that has a 1.10 percent volume decrease because of an increase in pressure from 1,000 N / cm^2 to 11,000 N / cm^2.
Determine the maximum temperature in the tank. Take the thermal conductivity of the wastes as 2.0 W/mK.
A steel bolt and nut are tightened around an aluminum sleeve. Find the internal forces as the nut is rotated 1 turn
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