A projectile is thrown with velocity U = 20 m/s + 5% at an angle 60^o. If the projectile falls back on the ground at the same level then which of following can not be a possible answer for range. [Consider g = 10m/s²]

(a) 39.0 m

(b) 37.5 m

(c) 34.6 m

(d) 32.0 m

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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