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An engine rejects 1260 MJ/h when running at a thermal efficiency of 22%. The calorific value of the fuel used is 42 MJ/kg. Determine the power output of the engine in kilowatts and the mass of fuel used/h. How do I solve this if the answers are 98.5 kW and 38.5 kg/h?
Fireclay brick of dimensions 0.06 m x 0.09 m x 0.20 m is removed from a kiln at 1600 K and cooled in air at 40oC with h=50 W/m2/K. What is the temperature at the center and at the corners of the brick after 50 minutes of cooling?
packages enter the 10ft chute at a with a speed of 4ftsec and have a 0.3g acceleration from a to b. if the packages
at a certain event 16 people attend and 5 will be chosen at random to receive door prizes. the prizes are all the
find a) velocity distribution in the film b) shear stress distribution c) volumetric rate of flow d) average velocity. assume the flow is steady and laminar.
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift?
a 250-kg crate b is suspended from a cable attached to a 20-kg trolley a which rides on an inclined i-beam as shown.
as a soil and water management expert you have been contracted to develop an irrgation systemnbspand regime for a large
a first class lever in static equilibrium has a 50lb resistance force and 15lb effort force. the levers effort force is
suppose that your business is operating at the threesigma quality level. if projects have an average improvement rate
many bridge designs today contain simple geometrical components but are constructed into complex ways to ensure that
wind turbines are becoming more and more common as a method of energy production wind turbines by their very nature are
Determine the resultant of the three forces F1 = 2.0i + 3.3j - 2.6k; F2 = - i + 5.2j - 2.9k; and F3 = 8.3i - 6.6j + 5.8k, which are concurrent at the point (2, 2, -5.). The forces are in Newton's and the distances are in meters.
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