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A 0.3 kg softball has a velocity of 15 m/s at an angle of 35° below the horizontal just before making contact with the bat. What is the initial linear momentum of the ball? What is the magnitude and direction of the change in momentum of the ball while it is in contact with the bat if the ball leaves the bat with a velocity of (a) 20 m/s, vertically downward and (b) 20 m/s, horizontally away from the batter and back toward the pitcher?
an insulated piston-cylinder device initially contains 0.15m3 of air at 150kpa and 22degc. the cylinder is connected to
What is a 90 percent confidence interval for the standard deviation of the thickness of a washer produced by this procedure?
a 25kg steel tank having a volume capacity of 250 litres is filled with liquid water at room temperature. what is need
Now suppose the mean time to failure (mf) on the expose machine is 60 hours and the repair time is exponentially distributed with a mean of 2 hours (mr). What are the effective mean and CV of the process time for a job of 60 panels?
the lower end of the 30 kg slender rod is displaced a small amount and released from the rest. determine the natural
determine the expressions for attractive and repulsive energies, EA and ER as a functions of r where r is in nm and E is in eV.
a polytropic process is one in which the pressure p and volume v are related by the formula npvcwhere c is a constant.
The effect on temperature and density of air under adiabatic compression, Air is going through a compressor
find the sum of two harmonic motions of equal amplitude but of slightly different frequencies. discuss the beating
consider an ideal simple gas turbine cycle. for a net power output of 10000 horse power an inlet air temperature of
propane gas enters a continuous adiabatic heat exchanger at 40degc and 250 kpa and exits at 240degc superheated steam
as part of a heat treatment process cylindrical 304 stainless steel rods of 100-mm diameter are cooled from an initial
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