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G11 Hockey player A carries the puck on his stick and moves in the direction shown with a speed vA = 4 m/s. In passing the puck to his stationary teammate B, he launches the puck at angle α =15' (60° from horizontal) and at a speed of 8 m/s relative to himself.
• Does he hit his teammate?
• If not, at what speed should he launch the puck relative to himself (with α = 15o) in order to hit his teammate?
an air conditioner is used to cool and dehumidify air. we will ignore the temperature aspect and model the air
compute the wet bulb temperature of moist air that has been cooled and dehumified from 25 c and 80 percent relative
A slab of intrinsic GaAs, 3cm long, 2cm wide, and 0.3cm thick, is exposed to light. The light is absorbed with an absorption coefficient a=500cm-1 (this means that the light intensity decreases in the material exponentially with distance t, and is pr..
steam with 88.6% quality and a flow rate of 750 kg/s enters a condenser operating @ 75 KPa. Saturated liquid leaves the condenser. How much heat is rejected to the cooling system.
ateam at 5 bar 320 c enters a steady state turbine with a volumetric flow rate of 0.65m3s and evpands adiabatically to
water is heated in a piston-cylinder arrangement where p const. from the saturated liquid state to the saturated vapor
A single-stage ideal regenerative steam cycle has a boiler pressure and temperature of 5000 kPa and 500 C, and a condensing pressure of 10 kPa. The extraction pressure is 500 kPa. If the regenerative heater is a closed heater with the condensate pump..
A cylinder with a 0.3 m inner diameter and 0.4 m outer diameter is internally pressurized to 140 MPa. Determine the maximum shear stress at the outer surface of the cylinder.
suppose you have a choice between a straight triangular or rectangular fin constructed of aluminum with a base
a constant-volume tank contains 10 lbm of ammonia initially at 30 lbfin2 and 80degf 539.67degr. the ammonia is then
a 80 kg resting person with a constant core temperature near 37 c transfers heat at the resting rate to hisher
Calculation of percentage heat reduction, Water at 90 C flows through a 50mm bore steel pipe of wall thickness 8 mm. Ambient temperature is 18 C. Calculate the heat loss per metre length of pipe
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