How and why may a theory be discarded

Another machine uses aninput force of 200 newtons to produce an output force of 80 newtons

Which of the following descriptions could apply to an accelerating car

If a runner decreases his velocity from 0m/s to + 20m/s in 2.0s, what is was his average acceleration?

Why does the bottom of a swimming pool always appear shallower than it actually is

What are the 2 processes involved in parents passing on their genes?

Which of the following are the top two job expectations of people who career plan? Select all that apply. A. Hours B. benefits C. type of work D. coworkers E. security

Define the term volt.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?