A Laser Beam Has a Wavelength of 633 Nm and a Power

question 44

Short Answer

A laser beam has a wavelength of 633 nm and a power of 0.500 mW spread uniformly over a circle 1.20 mm in diameter. This beam falls perpendicularly on a perfectly reflecting piece of paper having twice the diameter of the laser beam and a mass of 1.50 mg. (c = 3.00 × 10⁸ m/s, μ₀ = 4π × 10^-7 T ∙ m/A, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)
(a) What are the amplitudes of the electric and magnetic fields in this laser beam?
(b) What acceleration does the laser beam give to the paper?

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Definitions:

Encouraging Eustress

A positive form of stress that motivates and enhances one's ability to cope with life situations.

Negative Response

A reaction or answer that indicates dissent or displeasure towards a particular stimulus or situation.

Performance Process

The method or procedure by which individuals or organizations carry out tasks and activities to achieve specific outcomes, often evaluated to improve effectiveness.

Motivation Factors

Elements or conditions that encourage individuals to act or behave in a certain way to achieve desired outcomes.