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a) The volume of a cylinder of radius r and height h is given by V = pir2h. You crush a cylindrical can so that its volume stays constant. Find the rate of change of height with respect to the radius.
b) Continuing on. say the radius increases at a rate of 3 cm/sec at the moment that r = 5 and h = 4. What is the rate of change of height with respect to time then
when the 35-kg cylinder is released from rest the spring is subjected to a tension of 75 n.a determine the speed of the
A gas turbine (can assume an ideal Brayton cycle) has a pressure ratio of 10. It is connected to an electric generator with an efficiency of 95% which produces 200MW of electricity. The gas turbine burns natural gas with a heating value of 100,000 bt..
a cylindrical stone mix concrete beam of diameter d 0.45 initially at ti 20c is exposed to hot gases at tinfinity
The power P required to drive a fan is believed to depend on density p, flow rate Q, impeller dia. D, and angular veloctiy w in Hz. Determine by dimensional analysis, the general expression for dependence of P on other variables.
a particle moves along a hyperbolic path defined by the equation x216 - y2 28. if the x component of velocity is vx 4
The truncated nozzle shown in the figure below is used to monitor the mass-flow rate of air in a pipe. The area of the nozzle is 3 cm2. The total pressure and total temperature measured upstream of the nozzle in the pipe are 300kPa absolute and 20°C.
If the output of a gas turbine is 300 KW and its efficiency is 20 percent, what will be the heat supplied
A layer of water seperates two smooth surfaces a distance of 2r. Derive an experssion for the force needed to pul the two surfaces apart. Consider the bottom surface fixed. What is the force needed to seperate the top surface?
Calculate the specific heat capacities of the gas at constant volume and constant pressure, the initial pressure of the gas and the change in volume of the gas when it was heated at constant pressure.
1 consider the diagram below where a pump is used to draw water from a lake to feed an irrigation system.a which of the
Director has powerful features that allow programmers to create highly interactive multimedia applications.
How much would it cost to deliver one kilo Watt-hour? How does this compare with the cost of energy from your local electric utility at $0.10 per kilo Watt-hour?
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