Dev

A particle of mass 9 × 10−5 kg and charge 2 µC moves downward from point A to point B a distance of 4 m in the earth’s gravitational field. The kinetic energy of the particle decreases by 0.6 mJ during this movement.

What is the potential difference VB − VA? The acceleration of gravity is 9.8 m/s^2.

Find the derivative of f when

f(x) = tan(x) (3 + 8 csc(x))

---- this part is easy, I am having difficulty with the getting the right multiple choice answer. Is there a good way to figure this out -----

Find the derivative of f when

f(x) = tan(x) (3 + 8 csc(x))

---- this part is easy, I am having difficulty with the getting the right multiple choice answer. Is there a good way to figure this out -----

1. f′(x) = csc^2(x) (3 + 8 sin(x))

2. f′(x) = sec^2(x) (3 + 8 sin(x))

3. f′(x) = csc^2(x) (3 − 8 cos(x))

4. f′(x) = sec^2(x) (3 sin(x) + 8)

5. f′(x) = csc^2(x) (3 sin(x) + 8)

6. f′(x) = sec^2(x) (3 − 8 sin(x))

Thanks in advance