Answer:
besides a reduction in friction, the only way to increase the amount of work output of a machine is to Increase the work input
i
Explanation:
In object in motion stays in motion; speed
the answer is spiral galaxies
Answer:
Visible light has a shorter wavelength than radio waves
Density= how much mass is in a certain volume
Therefore, you do (mass/volume).
density of the block is
36g/9cm3
or
4g/cm3
Meaning that there is 4 grams of mass in each cm3.