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Brown Ja'da
Physics: Unit 7-Electricity & Magnetism 17 of 16
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The diagram below shows the arrangement of three small spheres A, B, and C. having charges of 39.9, and , respectively. Sphere A and C are located distace
from sphere B
B
Q.
F
---
Compared to the magnitude of the electrostatic force exerted by sphere B on sphere C, the magnitude of the electrostatic force exerted by sphere A on sphere
S
A the same
B. twice as great
C.
as great
D.
+
as great

Could someone me find the answer to this problem.

Observations show that interstellar clouds can have almost any shape and

You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?