A Helium-Neon Laser Emits Red Light Having a Wavelength of 632.8

question 74

Multiple Choice

A helium-neon laser emits red light having a wavelength of 632.8 nm and a power of 1.85 mW.How many photons are emitted each second? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,and 1 nm = 10−⁹ m)

• A)5.9E+15
• B)3.7E+34
• C)5.9E+24
• D)5.9E+18
• E)​1.2E+17

Describe the elements involved in the process of persuasion.

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Understand how attitudes are formed, maintained, and changed.

Understand the basic concepts and theories related to aggression and prosocial behavior.

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