(a) A ball is attached to a string of length L = 20.5 cm and suspended from the ceiling, as shown in the figure. A uniform electric field points to the right in the figure. When e = 13.0°, the ball is in equilibrium. Find the net charge on the ball (in µC). E = 1.00 × 10³ N/C m = 2.00 g 84.87 opposite It seems that you swapped sine and cosine in your calculation. Remember that sin(0) = hypotenuse (b) What If? If the electric field is suddenly turned off, what is the speed of the ball at the bottom of its swing (in m/s)? 0.35 Use energy conservation and solve your resulting equation for the speed v. m/s

(a) A ball is attached to a string of length L = 20.5 cm and suspended from the ceiling, as shown in the figure. A uniform electric field points to the right in the figure. When e = 13.0°, the ball is in equilibrium. Find the net charge on the ball (in µC). E = 1.00 × 10³ N/C m = 2.00 g 84.87 opposite It seems that you swapped sine and cosine in your calculation. Remember that sin(0) = hypotenuse (b) What If? If the electric field is suddenly turned off, what is the speed of the ball at the bottom of its swing (in m/s)? 0.35 Use energy conservation and solve your resulting equation for the speed v. m/s

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

(a) A ball is attached to a string of length L
20.5 cm and suspended from the ceiling, as shown in the figure. A uniform electric field points to the right in the figure. When 0 =
13.0°, the ball is in
%D
equilibrium. Find the net charge on the ball (in µC).
E = 1.00 × 10³ N/C
m = 2.00 g
84.87
opposite
It seems that you swapped sine and cosine in your calculation. Remember that sin(0)
hypotenuse
(b) What If? If the electric field is suddenly turned off, what is the speed of the ball at the bottom of its swing (in m/s)?
0.35
Use energy conservation and solve your resulting equation for the speed v. m/s

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