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Question: The exhaust gases from a rocket engine can be assumed to behave as a perfect gas with a specific heat ratio of 1.3 and a molecular weight of 32. The gas is expanded from the combustion chamber through the nozzle. At a point in the nozzle where the cross-sectional area is 0.2 m2, the pressure, temperature, and Mach number are 1500 kPa, 800°C, and 0.2, respectively. At some other point in the nozzle, the pressure is found to be 80 kPa. Find the Mach number, temperature, and crosssectional area at this point. Assume a one-dimensional, isentropic flow.
Radio waves from a star, of wavelength 247 m, reach a radio telescope by two separate paths. One is a direct path to the receiver, which is situated on the edge of a cliff by the ocean. The second is by reflection off the water.
A 755 N man stands in the middle of a frozen pond of radius 8.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. How long does it take him to reach the south shore
To fit a contact lens to a patient's eye, a keratometer can be usedto measure the curvature of the cornea-the front surface of theeye. Determine the radius of curvature of the cornea
A charge of +q is placed at the origin, while an identical charge is placed on the x axis at x = 0.50 meter. Estimate where should the third charge be placed
At t=1.0 second, a 0.85 kilogram object is falling with a speed of 6.0 meter per second. At t=2.0 second, it has a kinetic energy of 25 Joule. Determine the kinetic energy of the object at t=1.0 second
two charges -15 microc and 5.1 microc are fixed in place and separated by 4.4 m. a at what spot along a line through
Light from a sodium lamp (lamda=589 nm) illuminates two narrow slits. The fringe spacing on a screen 150 cm behind the slits is 4.0 mm. What is the spacing (in mm) between the two slits
A glass bead charged to 3.8 nC exerts an 6.0Ã-10âˆ'4N repulsive electric force on a plastic bead 2.7 cm away
A wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite charge on the car.
Suppose a neutrino is created and has an energy of 49.0 MeV. (a) Assuming the neutrino, like the photon, has no mass and travels at the speed of light, find the momentum of the neutrino. (b) Determine the de Broglie wavelength of the neutrino.
On a hot summer day (30 degrees Celsius), a pesky little mosquito produced its warning sound near your ear. What is the frequency in Hertz of the sound wave
Let I1 be the branch current though R1, I2 be the branch current through R2, and I3 be the branch current through R3. Write Kirchhoff?s loop rule relation for a loop that travels through battery 1, resistor 1, and resistor 3. (Use a clockwise curr..
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