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A thin plate heater is attached to the higher surface of 8 mm thickness aluminum horizontal plate which has thermal conductivity of 235 W/m.K., this surface and the other lower surface of aluminum plate are exposed to air stream of temperature 25 C and convection coefficient 100 W/m2.K. for both surfaces. If the heater dissipates 10 kW/m² under normal conditions, what is the temperature of the lower plate surface?
Assuming a coefficient of static friction equal to 0.2 at the common surface, find the maximum torque that may be transmitted by the flywheel without slippage.
a body is in sliding contact with an unlubricated horizontal surface and is horizontally constrained by a spring. the
1. would a flagpole made of steel or aluminum freeze ones tongue to it faster? why? thermal conductivity2. the outer
a can of aerosol deodorant contains one pound of a scented liquid that will vaporize and spray out when the top button
an adiabatic gas turbine using helium has inlet conditions 5 mpa and 500degc and outlet conditions of 50 kpa and
a piece of electronic equipment that is surrounded by packing material is dropped so that it hits the ground with a
determine the entropy generated for carbon dioxide in a pistoncylinder with an initial volume of 200 l at 300 degrees c
consider a vertical plate of dimension 0.25 m x 0.50 m that is at ts100 c in a quiescent environment at t infinity 20
a 2 l bottle of a carbonated beverage coke at 20 degc is placed in a cooler with 10 l of saturated liquid water and 30
saturated water at 1 atm and velocity 2 ms flows over a cylindeical heating element of diameter 5 mm. what is the
For a normal distribution, find the z score values that separate
measurements of drag force are made on a model automobile in a towing tank filled with fresh water. the model length is
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