Consider the field F = (x, y,z) and the cone z 2=x2+y2/a2- a. Show that when a = 1, the outward flux across the cone is zero. b. Find the outward flux (away from the z-axis), for any a>0. Therefore, the flux is zero. Interpret this result. A. The fluxes for x > 0 and x < 0 balance when a = 1, so the flux is zero. B. The field is parallel to the surface at every point, so the flux is zero. C. The fluxes for y > 0 and y < 0 balance when a-1, so the flux is zero. D. The field is normal to the surface at every point, so the flux is zero.

the 4th choice is the correct one

step-by-step explanation:

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step-by-step explanation:

answer: it is 8

step-by-step explanation:

you know why its 8

hello!

to begin with, we're given that on earth, a rock weighs 20 pounds, and while on jupiter, that same rock weighs 42 pounds. now, we're trying to find the weight of a rock that weighs 10.5 pounds on earth, on jupiter.

to solve this, first, set up a proportion, cross-multiply, and solve it algebraically.

setting up the proportion is the hardest and the most confusing part of the problem, but it's simple.

if on earth, the rock weighs 20 lbs, and on jupiter it weighs 42 lbs, our first part of our proportion is 20/42 lbs. the second part has to be equal to each other. this means that 10.5 has to be on the numerator of the fraction, and x, the value we're trying to find, has to be on the denominator. remember that the rock weighs 10.5 lbs on earth, and we're trying to find the weight of it on jupiter (which is x).

20/42 = 10.5/x

next, you would cross-multiply.

20x = 42(10.5)

20x = 441

now, solve it algebraically by using division.

x = 22.05 lbs

this can be rounded to 22.1 lbs.

therefore, the weight of the rock on jupiter is 22.1 lbs, the fourth choice.