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Question: In a proposed jet propulsion system for an automobile, air is drawn in vertically through a large intake in the roof at a rate of 3 kg/s, the velocity through this intake being small. Ambient pressure and temperature are 100 kPa and 30°C, respectively. This air is compressed and heated and then discharged horizontally out of a nozzle at the rear of the automobile at a velocity of 500 m/s and a pressure of 140 kPa. If the rate of heat addition to the air stream is 600 kW, find the nozzle discharge area and the thrust developed by the system.
An elevator and its load have a combined mass of 1600 kg. Find the tension in the supporting cable when the elevator, originally moving downward at 11 m/s
An RLC circuit shown above with a peak voltage of 240 V, f = 60 Hz, R = 100 Kilo Ohms, L = 0.5 mH, C = 200 micro F, What is the linear resonant frequency of the circuit
Two students decided to fling balloons filled with M1=68.1 grams ofice water at coeds who are sun batheing on the roof of a sororityhouse two blocks east of the physics bulding. Calculate the mass of the lead sphere
Welcome to PHYS 151, "Mechanics and Heat." In this class we will explore the foundations of modern mechanics from the point of view of our current, best understanding of the physical universe.
An archer pulls her bowstring back 0.432 meter by exerting a force that increases uniformly from zero to 227 Newton. Obtain the equivalent spring constant of the bow
Commercial ultracentrifuges can rotate at rates of 100,000 rpm. Find the distance from the rotation axis of the sample chamber in such a device
during a circus performance a 71.2-kg human cannonball is shot out of a 16.8-m-long cannon. if the human cannonball
Two parallel wires are 13 centimeter apart. Each wire is 6 centimeter long. Calculate the force between the two wires
n object weighs 9.21 N when it is in air and 7.29 N when it isimmersed in water. What is the specific gravity of the object
Assume that positive -axis is directed toward the direction of motion of cart 2.
Estimate the thickness of steel (density 8 g/cm3) needed to stop a proton of momentum 2 GeV/c. Then, for the same thickness of steel, calculate the energy loss of a 2 GeV/c gamma ray.
how much energy is lost through a window with a 1x2m^2 larg, 3 mm thick glass sheet, if temperature difference between outside
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