How do rivers change as they travel even further downstream from the source?

The car travels down the road at 60mph for 1.5 hours. How far does it go?

When you observe a distant galaxy whose photons have traveled for 10 billion years before reaching earth we are seeing that gal?

If the worlds human population stay away from all the fast foods that they purchase and consume their overall physical and mental state would be greatly affected

Why is it important to examine materials at the atomic level? Atomic properties reveal if a material can be viewed as a particle or a wave. Atomic properties allow the scientist to know how many electrons the material has.

A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. The student reports hearing two successive resonances at 53.95 Hz and 59.00 Hz. (Assume that the speed of sound in air is 343 m/s.

If one side of switch is open and another one closed so what gone happen

At t = 19.8 seconds an object with mass 2.0 kg was observed to have a velocity of m/s. At t=20.02 seconds its velocity was m/s. What was the average (vector) net force acting on the object?

How do you get over a break up? (I know this has nothing to do with school work but I really need some advice.)

Suppose you have a hypothesis you believe to be correct what should you do to make you become a theory A. Write a letter to the noble prize committee B. Do the same experiment over and over again C.

What method of heat transfer does heat energy use to reach earth from the sun?