Which of the following statements is false for a particle moving in a circle with a constant angular speed? (A) The velocity vector is tangent to the circle. (B) The acceleration vector is tangent to the circle. (C) The acceleration vector points to the centre of the circle. (D) The velocity and acceleration vectors are perpendicular to each other. ?

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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