Electric Field of a Single Point-Charge: an Atomic Nucleus Has

question 4

Multiple Choice

Electric field of a single point-charge: An atomic nucleus has a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the center of the nucleus? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C², e = 1.60 × 10^-19C)

• A) 5.4 × 10^-8 N/C
• B) 5.6 × 10^-8 N/C
• C) 5.8 × 10^-8 N/C
• D) 6.0 × 10^-8 N/C

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Definitions:

Scrap Value

The estimated resale value of an asset at the end of its useful life, which is considered during the depreciation calculation of that asset.

Required Rate of Return

The minimum rate of return on an investment deemed acceptable by an investor, considering the investment's risk.

Internal Rate of Return

A financial metric used to evaluate the profitability of potential investments, calculating the discount rate that makes the net present value of all cash flows equal to zero.

Payback Period

Payback period is the duration required to recover the cost of an investment, calculated by dividing the initial investment by the annual cash inflow.