The force between two identical lead spheres is measured to be 5.8 x 10-8 N when they are 0.60 m apart. Find the mass of each sphere.

Aboat that travels with constant speed of 6.10 m/s in still water is to go directly across a river. the current in the river flows at 1.95 m/s. (a) at what angle must the boat be steered?

Why do electron microscopes have higher resolving power than light microscopes?

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter