Which factor can increase both potential energy and kinetic energy of an object? A=Increase in speed B= Increase in mass C= Decrease in temperature D= Decrease in height from the ground

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

What causes the formation of ocean currents?

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.