1. Why is the theory that all things are made up of atoms a theory and not a fact?

Using the scientific definition of work, does a greater amount of force always result in a greater amount of work? why or why not?

A source emits sound with a frequency of 16246 Hz. Both it and an observer are moving toward each other, each with a speed of 141 m/s. What frequency (in Hz) does the observer hear?

Is Energy of motion kinetic energy potential energy both

N a presentation about measuring mass, one of your classmates states, "Two objects of the same size will always have the same mass." Is this statement correct? Why or why not?

Standing waves on a 1.0m long string that is fixed at both ends are seen at successive frequencies of 24 hz and 36hz. what is the fundamental frequency and wave speed

Your friend of mass 50 kg can just barely float in fresh water. Calculate her approximate volume.

A flashlight beam strikes the surface of a pane of glass (n = 1.50) at a 61° angle to the normal. what is the angle of refraction?

Why is there controversy to the opinion that human contribution of carbon dioxide to the atmosphere is cause warming

If the resistance of a circuit increases, that means that the current has to

One watt is equal to which of these values? 1 joule/hour 1 joule-hour 1 joule/second 1 joule-second