A Thin,circular Disk of Radius 30

question 21

Multiple Choice

A thin,circular disk of radius 30.0 cm is oriented in the yz-plane with its center at the origin.The disk carries a total charge of +3.00 μC distributed uniformly over its surface.Calculate the magnitude of the electric field due to the disk at the point x = 15.0 cm along the x-axis. (ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A)9.95 × 10⁵ N/C
• B)4.98 × 10⁵ N/C
• C)3.31 × 10⁵ N/C
• D)2.49 × 10⁵ N/C
• E)1.99 × 10⁵ N/C

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Flynn Effect

The observed substantial and long-term increase in intelligence test scores measured across the world over the 20th century.

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A measurement of an individual's cognitive abilities without adjustments for age or any other factors.

Flynn Effect

The observed substantial and long-term increase in both fluid and crystallized intelligence test scores measured in various parts of the world over the 20th century.