63. A lightweight aluminum sphere (m = 15.1 g) hangs by an insulating thread in a uniform electric field
of 585 N/C directed upward as shown in Figure 6.
The tension in the sphere is 0.167 N. (7.3) CA
+ + + + +
Figure 6
(a) Sketch all the forces acting on the sphere.
(b) Determine the magnitude and direction of the
electric force acting on the sphere.
(c) Calculate the magnitude and sign of the charge
on the sphere.

The horse latitudes-high-pressure zones about 30 degrees north and 30 degrees south of the equator.-warm air traveling away from the equator cools and sinks-weather tends to be clear and drythe doldrums-low-pressure near equator-air rises and spreads out toward the poles-rising moist air produces clouds and heavy rainthe westerlies-blow from the west-move from the horse latitudes toward the poles.-bring storms across much of the united statesthe tradewinds-blow from the east-move from the horse latitudes toward the equator  -strong, steady winds