A Sodium Vapor Lamp Has a Power Output of 300

question 52

Multiple Choice

A sodium vapor lamp has a power output of 300 W.If 590 nm is the average wavelength of the source,about how many photons are emitted per second? (h = 6.63 x 10^-34 J*s,c = 3.00 x 10⁸ m/s,and 1 nm = 10^-9 m)

• A)10¹⁷
• B)10²¹
• C)10²⁵
• D)10²⁹

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Definitions:

Age Of Viability

The age at which a premature baby is capable of surviving outside the womb with medical support, typically around 24 weeks of gestation.

Germinal Period

The initial two weeks of prenatal development following conception, characterized by rapid cell division and the beginning of cell differentiation.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby while removing waste.

Implantation

The process by which a fertilized egg attaches itself to the wall of the uterus, beginning the stages of pregnancy.