Apiston filled with 0.04 mol of an ideal gas expands reversibly from50.0 mL to 375 mL at a constant temperature of 37.0°C. As it doesso, it absorbs 208J of heat. The values of q and w for the processwill be :(R= 8.314 J/mol K) (In 7.5 = 2.01)A) q= + 208 J, w = - 208 JB) q= - 208 J, w = - 208 JC) q= - 208 J, w = + 208 JD) q= + 208 J, w = + 208 J

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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