Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is halved, then the new electrostatic force will be units.​

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?