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A closed stationary sytem consists of 2 kg of mass. During a certain process, 20 KJ/Kg of work is done on the system and the internal energy increased by 40 KJ/Kg. Does the system transfer or gain to surroundings or by surroundings?
During the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the work input during this process. R(air)=287j/KgK
a solid circular bar of aluminium fits inside a tube of copper with outside diameter of 50mm amp 45mm as inside
determine the slenderness ratio of a 5 m column with built end if its cross section is a circular with a radius of 40 mm and b 50 mm square use the concept of effective length.
at a certain event 16 people attend and 5 will be chosen at random to receive door prizes. the prizes are all the
Determine the number of revolutions that the motor executes in a) reaching its rated speed, b) coasting to rest.
a 15-tooth pinion having a pressure angle of 25ordm and module of 8mm is to drive an 18-tooth gear. determine for both
a furnace wall as 0.5 m thick inner layer of fire clay brick k1.7wmk a 0.1 m thick layer of kaolin brickk0.12 and a
the velocity of a particle moving in the x-y plane is given by 6.12i 3.24j ms at time t3.65s. its average acceleration
what is the cooling temperature range obtained by thermoelectric refrigeration?
a circular coil having 19 turns and a radius of r 17.6cm carries a current of 3.80a. it is placed in a uniform
a long flat bar has the s-n diagram. the bar is 6in wide by .5 in thick. it has a 2 in hole in the middle.a what is the
spherical balloon has a diameter d1 when the pressure of the gas inside is p1 and atmospheric pressure is po. the gas
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