Tension in the rope due to applied force will be given as

angle of applied force with horizontal is 37 degree
displacement along the floor = 6.1 m
so here we can use the formula of work done

now we can plug in all values above


So here work done to pull is given by 691.8 J
Energy comes from the Sun, plants and animals that we eat, to provide us with nutrients we need for energy.
Explanation:
We have,
Surface area, 
The current varies wrt time t as :

(a) At t = 2 seconds, electrical charge is given by :

(b) Current is given by :

Instantaneous current at t = 1 s is,

(c) Current is, 
Current density is given by electric current per unit area.

Therefore, it is the required explanation.
I am fairly certain it's D. Good luck!
Her acceleration is
(250) divided by (the swimmer's mass, in kilograms).
The unit is " meters per second² " .