The answer is B, when you subtract 400N from 600N, you are left with 200N in net force.
Answer with Explanation:
We are given that


We have to find the direction and magnitude of the third force acting on the object.
Resultant force,F=

The object moves with constant velocity .Therefore, net force on object is equal to zero
So,Third force,
Direction,

Angle lies in second quadrant because the direction of third force is opposite to the direction of the resultant force of F1 and F2.
Therefore,
I think with the increasing of temperatures of earths oceans and atmosphere is causing climate change and global warming. When the ocean heats up a lot of sea animals die and with the hot temps in the atmosphere is causing rare hot tempatures in some places in the world.
It can cause some intense storms but it mostly heats up the world and cause a lot of problems.
I hope i answered your question right.
Given:
density of air at inlet, 
density of air at inlet, 
Solution:
Now,

(1)
where
A = Area of cross section
= velocity of air at inlet
= velocity of air at outlet
Now, using eqn (1), we get:

= 1.14
% increase in velocity =
=114%
which is 14% more
Therefore % increase in velocity is 14%