5m+2n-7-2m+15
Combine all like terms.
3m+2n+8
Answer: C
Step-by-step explanation:
We know that A and D will not be the correct answers. For A, it's only one 90 angles, but the questions said that has two angles. For D, it's two angles : 90 and 12, but in the question, 12 is the length, not the angle.
The correct answer is C.
Step-by-step explanation:
Given:

This field will have a scalar potential
if it satisfies the condition
. While the first x- and y- components of
are satisfied, the z-component doesn't.


Therefore the field is nonconservative so it has no scalar potential. We can still calculate the work done by defining the position vector
as

and its differential is

The work done then is given by



242.975609756 I don't know about the last one though.
So the correct ratio is 4:5
The only one that doesn’t mean the same as that is C.