A load of 400N is lifted by first class lever in which the load is situated 20m away from fulcrum and effort is situated 60m from fulcrum ,if 150N effort is applied on the lever then calculate the Mechanical Advantage and Velocity Ratio. HELP FAST PLSSS

In which chemical equation, which symbol should be used to indicate that substance is in solution?

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.