Answer:
The vector magnitudes F and r are always postive, so the sign o W is determined entirely by the angle e between the force and the displacement.Submit Figure 1 off 1 part C
Answer:
Blood absorbs nutrients and the waste products of cells. It carries waste away from cells and pumps nutrients through the whole body.
Explanation:
Well, i would tell the kid that light is electromagnetic radiation which
is visible. The frequency and wavelength is just right so the radiation
becomes visible, and that visible radiation goes away from the star and
reaches earth
It also depends on the age of the child and the comprehension level
Answer:
efficiency = 5.4%
Explanation:
Efficiency of heat engine is given as

now we will have

so we will have

now we know that

so we have



so efficiency is 5.4%