A sphere has a charge of + 12µC. How many electrons were removed from the sphere?

a. 7.5 X 1013

b. 7.5 X 1019

c. 4.8 X 1025

d. 12 x 10-6

The diameter of a red blood cell is about 3x10^-4 inches to centimeters. for this question I wrote 7.6x10^-4cm put it was mark incorrect and i dont know why its about conversions, but the question is the following, The diameter of a red blood cell,

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A set of charged plates 0.00262 m apart has an electric field of 155 N/C between them. What is the potential difference between the plates? V

Which type of noise has sound at every frequency within the range of human hearing?

A 1,600 kg car traveling north at 10.0 m/s crashes into a 1,400 kg car traveling east at 15 m/s at an unexpectedly icy intersection. The cars lock together as they skid on the ice. What is their speed after the crash?

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The contamination that results from the spread of bacteria from meat to vegetables is called

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