an object of mass 800 gram hangs on a spring calculate the force exerted by the object of acceleration due to gravity is 10m/s square​

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form