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Two small balls, each of mass m = 0.2 kg, hang from strings of length L = 1.5 m. The left ball is released from rest with θ = -45?. As a result of the initial collision the right ball swings through a maximum angle of 30?. Determine the coefficient of restitution between the two balls.
a large fireplace in a ski lodge has a glass firescreen which covers a vertical opening in the fireplace. the opening
(a) At what surface temperature must the plate be maintained to achieve a condensation rate of m = 25 kg/h? (b) Compute and plot the surface temperature as a function of condensation rate for 15 m 50 kg/h.
a gear reduction system consists of three gears a b and c. gear a starts from rest at time t0 and rotates clockwise
Write a description of the generation of the following with reference to diagrams. Dry saturated steam. Super heated steam.
Two options are available for reduction of pressure for superheated R- 134a flowing steadily at 500 kPa and 40oC to a pressure of 100 kPa. In the first option, the vapor is allowed to expand through an adiabatic nozzle with an exit velocity not to ex..
1. determine the amount of excavation needed for the basement. a 2 foot working distance is required and the
water is contained in a closed rigid tank of volume 0.3 m3 at an initial pressure of 4 bar and a quality of 66. heat
burning one metric ton 1 000 kg of coal can yield an energy of 3.30x1010j. fission of one nucleus of uranium235 yields
a rigid container having a volume of 1.2 m3 contains 10 percent by volume of liquid water at 100 kpa. the remaining
1. determine the solar elevation at solar noon for winer solstice equinox and summer solstice for elevations 30 40 and
The groundwater table is located at a depth of 12 m. The dry unit weight of sand from 0 to a depth of 12 m is 17.6 kN/m3. Assume that the mean grain size (D50) of the sand deposit to be about 0.8 mm. Estimate the variation of the relative density w..
You have a liquid-phase mixture of 0.250 mol fraction ethanol and 0.750 mol fraction water at 760.0 mmHg. You'd like to calculate the bubble-point temperature of the mixture, and the composition of the vapor formed at the bubble-point temperature. As..
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