A Solid Nonconducting Sphere of Radius R Carries a Charge

question 20

Multiple Choice

A solid nonconducting sphere of radius R carries a charge Q distributed uniformly throughout its volume.At a certain distance r₁ (r₁ < R) from the center of the sphere,the electric field has magnitude E.If the same charge Q were distributed uniformly throughout a sphere of radius 2R,the magnitude of the electric field at the same distance r₁ from the center would be equal to

• A) E/8.
• B) E/2.
• C) 2E.
• D) 8E.
• E) E.

Understand the impact of technological change on productivity growth.

Recognize the evolution of the United States' savings rate and its implications on the economy.

Differentiate between economic conditions before and after the industrial revolution.

Describe the changes in work hours and productivity in different countries over time.

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