Explanation:
For question no 19
Force (F) = 20N
distance (d) = 5m
Work = F * d
= 20 * 5
= 100 J
Now
For question no 20
D. No matter how much force is applied the object must have motion for work to be done.
A variable that depends on something else
Amino acids. Every protein is a long chain of amino acids.
D) The cell will expand and become turgid.
The plant cell will basically absorb all the water by osmosis and swell, but because it has a cell wall it will become turgid.
