A 220-Kg Mirror with a Surface Area of 1

question 38

Multiple Choice

A 22.0-kg mirror with a surface area of 1.0 m² and a 98% reflectivity is bombarded by light of average intensity 770.0 W/m² at an angle of 30.0° to the normal of its surface. If the light has a duration of 0.60 s, how much does the velocity of the mirror change during that time? (c = 3.00 × 10⁸ m/s, μ₀ = 4π × 10^-7 T ∙ m/A, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A) 120 nm/s
• B) 4.2 nm/s
• C) 3.6 nm/s
• D) 2.1 nm/s

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