Two sounding bodies producing progressive wave given by y1 = 4 sin 400 pt and y2 = 4 sin 404 pt are situated very near to the ears of a person who will hear(a) 2 beats per second with intensity ratio (4/3) between maxima and minima(b) 2 beats per second with intensity ratio (/1) between maxima and minima(c) 4 beats per second with intensity ratio (7/1) between maxima and minima(d) 4 beats per second with intensity ratio (4/3) between maxima and minima

in a physics laboratory a block x is balanced by a block Y of mass 200 kg,each are suspended from a balance of equal lever arms .the scale pan on X is at a height.H1=2 cm ,where as scale pan on Y is at height 1 cm above the floor.the error in weighing is (in gram)

consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

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