2. Which requires more work, lifting 10-kg load a vertical distance of 2 m or lifting a 5-kg load a vertical distance of4 m?

An uncharged nonconductive hollow sphere of radius 18.0 cm surrounds a 12.0 µc charge located at the origin of a cartesian coordinate system. a drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. calculate the electric flux through the hole.

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

What is the measurement of how fast an object moves relative to a reference point?