G is the gravitational constant, which is approximately 6.6x10^-11 Nm/s^2. It has the same value regardless of the masses of both objects or the distance between them.
<span>C is the correct answer. Electron microscopes require a vacuum to work, so living cells cannot be seen because they cannot respire. Light microscopes use a ray of visible light instead of a beam of electrons to magnify something so it can be seen by the naked eye. There are two different types of electron microscope: transmission (TEM) and scanning (SEM).</span>
Answer:
4.545454 seconds
Explanation:
1500/330=4.545454 seconds
Answer:
it's sqrt 175 which is pretty close to 14(sqrt 176)
Explanation:
geo mean is a*b
then square rooted
to get the mean
