Ametallic sphere has a charge of 10 microcolumb. a unut negatuve charge is brought from a to b both 100 cm away from sphere but a being east of it while b being on west the net workdone is

The work done is, W = 0

Explanation:

Given,

The charge of the metallic sphere, Q = 10 μ C

The charge of the test charge, q = -1

The initial position of the unit charge, A = 100 cm

The final position of the unit charge, B = 100 cm

The work done by the unit charge is given by the equation

Where F is the force between two charges

Substituting in the above equation

On integrating for the limit A to B

Substituting the integral values

                                  V = 0

The work done by a unit charge on an electric field from A to B is the difference between the electric potential of the two locations. If the locations are at the same distance from the origin, the work done will be zero.

Hence, the work done by moving a unit negative charge from point A to B is, V = 0

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.