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Question: A cliff diver, mass 165 lbm, dives from a 135 ft cliff into the sea. Neglecting air friction:
(a) What is the divers total energy in joules at the following heights: 100 ft, 50 ft, surface of the water?
(b) What is the divers velocity in mph at the first contact with the water?
Describe what a riser is in the context of sand casting. What are its main functions? In light of Chvorinovs rule, what should be taken into account when determining the geometry, dimension, and location of a riser in a sand casting mold?
a six cylinder four stroke spark ignition engine operating on the ideal otto cycle takes in air at 1 atm and 18 oc and
determine the torque that can be applied to a solid shaft of 20-mm diameter without exceeding an allowable shearing
what is the human development index? suppose the world population in year 2100 will be 9 billion people. assume the
water at 60 f is flowing in laminar flow between two stationary parallel plates spaced 2 inches apart. the centerline
The fluid level in the open tank is 150 ft below that in the closed tank. Determine the required diameter of the pipe. Neglect minor losses.
Calculate the heat transfer from the products per amount of substance of CO2 in the gases leaving the heat exchanger if dissociation can be neglected at the lower temperature.
1 what cooling air flow rate would be required to maintain a space at 72 degrees f if it had a sensible cooling load of
Bar AB has a cross-sectional area of 1200 mm2 and is made of a steel that is assumed to be elastoplastic with E = 200 GPa and σY = 250 MPa.
Determine the probable production in cubic yard bank measure (bcy) for a 2-cy dragline when excavating and casting good common earth.
Explain why the string does no work on the yo-yo. Find the energy conservation equation for the yo-yo and deduce its acceleration.
One-half kilogram of water executes a Carnot power cycle. During the isothermal expansion, the water is heated until it is a saturated vapor from an initial state where the pressure is 1.5 MPa and the quality is 25%. The vapor then expands adiabatica..
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