A CD Player Uses a Laser Whose Light Frequency Is

question 59

Essay

A CD player uses a laser whose light frequency is 3.85 × 10¹⁴ Hz. Calculate the energy, in joules, of the photons.

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Definitions:

Urinary Catheterization

The insertion of a catheter into the bladder through the urethra to drain urine, used for patients who cannot urinate naturally.

Bladder Scanner

A non-invasive, ultrasound device used to quickly and accurately measure bladder volume and residual urine, often used to assess urinary retention.

Urine Output

The volume of urine excreted by the kidneys over a given period, indicative of renal function.

Foley Catheter

A flexible tube inserted into the bladder to drain urine into a collection bag.