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A stone is thrown vertically upward from a bridge located 40 m above the water. Knowing that it strikes the water 4 s after release, determine:
a. speed with which the stone was thrown upward.
b. the speed with which the stone strikes the water.
ammonia enters a heat exchanger operating atsteady state as a superheated vapor at 14 bar 60degc where itis cooled and
two streams of air mix together. the first stream state 1 has 4 kgs of air entering at 300k 1 bar. the second stream of
the open circuit voltage of a hydrogen-oxygen fuel cell operating at rtp is 0.96 v and its internal resistance is 1.2 m
(a) Find the speed of the bucket (b) How fast must the bucket move at the top of the circle so that the rope does not go slack?
a 180-lb man and a 120-lb woman stand side by side at the same end of a 300-lb boat ready to dive each with a 16-fts
Determine the normal force R between the wheel and the horizontal surface. Neglect the weight of the horizontal shaft.
a power plant generates 150 mw of electrical power. it uses a supply of 1000 mw from a geothermal source and rejects
a 2-kg sphere a is moving toward the right at 4 ms when it strikes the end of a 5 kg slender bar b. the coefficient of
A successive approximation ADC has 4 bits and a reference voltage of 10 V. If the input voltage is 2.8 V, describe each step the ADC undergoes to determine the value of the 4 bits. What input voltage will be computed by the ADC?
A lap joint needs to be designed using 20-mm diameter bolts to carry a load of 120 kN on the connecting plates. If the shear stress in each rivet is not to exceed 90 MPa, determine the number of bolts needed.
brass balls each of mass 0.258 kg and initially at 130degc are quenched in a water bath at 50degc for 2 minutes at a
a four-cylinder four-stroke 2.2 liter gasoline engine operates on the ideal otto cycle with a compression ratio of 10.
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