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An insulated piston-cylinder device contains 100 L of air at 400 kPa and 25°C. A paddle wheel within the cylinder is rotated until 15 kJ of work is done on the air while the pressure is held constant. Determine the final temperature of the air.
A cooking pot whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid. If the local atmospheric pressure is 101 kPa, determine the temperature at which the water starts boiling when it is heated.
suppose because of random variations introduced during fabrication the links of a chain have a random strength whereby
consider the ocean thermal energy conversion system given in the lecture notes. also take into consideration that
determine a) the angular accelerations of gears B and C, b) the accelerations of the points on gears B and C which are in contact when t = 0.5 s.
the truck at b is used to hoist the cabinet up to the fourth floor of a building using the rope and pulley arrangement.
find the momentum and buoyant length scales.
A small steel ball bearing with a mass of 13 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.35 m. Calculate the speed at which the ball leaves the spring.
What are the percentages of the total heat absorption taking place in the economizer, boiler drum and the superheater, respectively? Assume cp of air and water as 1.005 kJ/kg K and 4.2 kJ/kg K, respectively.
If the maximum temperature in the cycle is not to exceed 2200 K, determine the thermal efficiency and the mean effective pressure.
What is the effect of immersion depth on a glass electrode and what aspects of the design of a pH electrode installation would lead to reduced manual maintenance and improved reliability
If the density of air is 1.20 kg/m^3 at the inlet and 1.05 kg/m^3 at the exit, determine the percent increase in the velocity of air as it flows through the dryer.
ten kilograms of water initially at 3000 kpa 200degc are contained in a piston-cylindernbspdevice shown below. a
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