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Two cars simultaneosly enter an intersection with 35 degrees between their headings. the car on the left weighs 5000 lbf and is going 45 mph the car on the right weighs 8000 lbf and is going 60 mph. If both drivers lock their brakes at the instant of collision until they stop after rebound how far apart are the cars when they come to rest. The friction coefficient between the tires and the road is uk=0.8 and the coefficent of restitution for the collision is er=0.4. If the duration of impact is 0.5 seconds what is the magnitude of the average loads on people in the cars during the impact.
an open feedwater heater operates steadily with 30 kghr of liquid water entering one inlet at 40 degcnbspand 700 kpa.
a pipe system carried a steam-water mixture at 250psi 95 quality. a leak develops in the pipe allowing fluid to escape
air flows through a convergent-divergent nozzle from a large reservoir in which the pressure and temperature are
a football player releases a ball with an initial velocity 80 fts at an angle 35 degrees above the horizontal.
water is pump from a lake to a storage tank at 18m above at a rate of 70 L/s while consuming 20.4 kW of electric power. disregarding any frictional losses in the pipes and any change s in kinetic energy, determine (a) the overall efficiency of the..
the cylinder is made from steel where yield stress= 240 MPa and v=0.3. Subsequently sketch the hoop and radial stresses in the wall of the cylinder.
a rigid container is separated into 2 compartments by a very thin solid membrane. one side initially holds 2 m3 of air
suppose you have a 50 kg block of steel. if you have 103 exajoules at your disposal how many times could you push this
Calculate spring coefficient k = P/δ and discuss the design on how much spring radius r should be changed to increase k two times
Calculate the e?ciency of the furnace if the speci?c heat capacity of the water is cp = 4.2kJ/(kgK) and the zero level of enthalpy is at 0?C! (η = 79.6%)
a 13.2-N force P is applied to the lever which controls the auger of a snowblower. Determine the moment of P about A when alpha is equal to 30 degrees.
a mechanic is reinstalling a newly-sharpened blade on a lawn mower. a wedged-in block of wood at c prevents the blade
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