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Question: In a hydrogen-powered rocket, hydrogen enters a nozzle at a very low velocity with a temperature and pressure of 2000°C and 6.8 MPa, respectively. The pressure on the exit plane of the nozzle is equal to the ambient pressure, which is 10 kPa. If the required thrust is 10 MN, what hydrogen mass flow rate is required? The flow through the nozzle can be assumed to be isentropic and the specific heat ratio of the hydrogen can be assumed to be 1.4.
Two sinusoidal waves of the same frequency travel in the same direction along a string. what is the amplitude (in cm) of the resultant wave
Prepare a project report on Study of formation of crack patterns in bentonite clay with different AC voltages.
A parallel-plate capacitor has a plate separation of 5.0 cm. Ifthepotential difference between the plates is 2000 V, with the top plate at the higherpotential, what is the electric field between the plates?
questionthink the sun to be at the origin of a xy-coordinate system. a telescope spots an asteroid in the xy-plane at a
The pilot of an airplane notes that the compass indicates a heading due west. find the velocity of the airplane relative to the ground
An engine absorbs 1.72 kJ from a hot reservoir at 277°C and expels 1.24 kJ to a cold reservoir at 27°C in each cycle. how much work is done by the engine in each cycle
A hand-cranked AC generator is used to cause 0.65 A of current (rms), What is the minimum average rate at which work must be done on the generator
a tube is open only at one end. a certain harmonic produced by the tube has a frequency of 715 hz. the next higher
A 21.00 lead sphere is hanging from a hook by a thin wire 3.90 long, and is free to swing in a complete circle. What must be the minimum initial speed of the dart so that the combination makes a complete circular loop after the collision
The Raptor is an outside loop roller coaster in which riders are belted into seats resembling ski-lift chairs. Draw the free body diagram of the rider at the highest position in the loop.
A steel wire in a piano has a length of 0.8000 m and a mass of 3.900 10-3 kg. To what tension must this wire be stretched so that the fundamental vibration corresponds to middle C (fC = 261.6 Hz on the chromatic musical scale)?
A patients heart pumps 4.2L of blood per minute into the aorta, which has a diameter of 2.2cm. find the average mechanical power output of the heart
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