If a hole is bored along the diameter of the earth and a stone is dropped into the hole (a) The stone reaches the centre of the earth and stops there (b) The stone reaches the other side of the earth and stops there (c) The stone executes simple harmonic motion about the centre of the earth (d) The stone reaches the other side of the earth and escapes into space

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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