A 355.8 kg horse ran up to the top of a hill. If the hill was 6.1 meters high up, what is the minimum work required for the horse to get there?

Niobium forms a substitutional solid solution with vanadium. compute the number of niobium atoms per cubic centimeter for a niobium-vanadium alloy that contains 24 wt% nb and 76 wt% v. the densities of pure niobium and vanadium are 8.57 and 6.10 g/cm3, respectively

In science and physics what is the standard unit of measure for speed?

What sort of waves exhibit the doppler effect?