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A 2000kg ship initially at rest in an inertial system is accelerated along a straight line for (3.16E7 seconds) by means of a photon rocket of 300MW power. If this is accomplised using a series of He-Ne lasers with wavelength=633 nm,
b) what is the speed of the spaceship after one year?c) what distance does it traveld) what fraction of energy released is in the kinetic energy of the spaceshipe) what is the wavelength of light observed in the initial inertial reference frame after 1 year? Doppler effect.
an insulated cylinder of fixed volume of 4 meter cube contains 20 kg of nitrogen. paddle work is done on the gas by
Aeroplane Dynamics, Determine the steady thrust that would enable a 200-tonne airliner to reach its take-off speed (75 m sâ?'1), from rest, in 30 s
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a cycle using helium in a piston-cylinder device starts at t1 300 k and p1 0.2 mpa. the helium is then compressed
control engineeringyou have to design a control system for an annealing furnace. the furnace is used to anneal special
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The bending moment M at position x m from the end of a simply supported beam of lenght L m carrying a uniformy distributed load of w Kn m-1 is given by
an element of material is subjected to the following state of stress.sigmax-40 sigmay100 sigmaz30tauxy-50 tauyz12
estimate the design-stage uncertainty in determining the voltage drop across an electric heating element. the heater
carbon monoxide in a piston-cylinder device is compressed from 1 bar and 37?c to 3 bar and 147?c. the compression
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