A pulley system having 5 pulleys is used to raise a 450N load. Find the mechanical advantage and hence the effort if the efficiency is 75%

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number