Which of the fundamental forces explains the structure of atoms and molecules?

A ball rolling along a floor doesn't continue rolling indefinitely. is it because it is seeking a place of rest or because some force is acting upon it?

Why do astronauts' weights differ in space? There is a less gravitational force in space. Their mass changes in space. Space is colder than Earth. There is less oxygen in space.

In a series circuit with five identical bulbs, which bulb lights up first?

How does a roller coaster create the sensations of falling, and being thrown around?

In a crossing situation, which vessel is required to maintain its course and speed?

What factors determine whether a collision between two reactant molecules will result in a reaction?

As you brake your bicycle, your velocity changes from 20 east m/s to 10 east m/s in 5 seconds. What is your acceleration?

Some ancient civilizations used units of measure based on the length of certain seeds. what kind of problems might you expect with such a system?

You are standing on the SCALE The scale is on the floor. What are the forces on the SCALE?

which of the following is an example of a compound machine. a. a bicycle chain. b. a coffee mug. c. a paper cutter