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a 2m crowbar is used to lift a load of 300kg. what force must be applied to one end of the crowbar when a stump acting at the fulcrum is placed under the crowbar 0.5m away from the end on which the load rests? neglect the weight of the crowbar

A ball of a mass 100g falls from a height of 3m unto a horizontal surface and bounce to the height of 12m calculate the change in the momentum of the ball when it strikes the surface.

Solve of for The percentage of carbon hydrogen and oxygen in vitamin C were determine by burning a sample weighing 2.00mg the masses Co2 and water found were 3.00mg and 0.81mg respectively,Given that the molar mass of vitamin C is 180g, determine the mole...

out of 80 student ss3 if each student offer at least one of chemistry and physics if 50 student offer chemistry and 42 offer physics.How many student offer chemistry only

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