What is the electric force acting between two charges of 0.0042 C and -0.0050 C that are 0.0030 m apart?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

Complete the following statements to describe solids, liquids, and gases. select the correct answer from each drop-down menu. a solid a definite volume and a definite shape. a liquid a definite volume and a definite shape. a gas a definite volume and a definite shape