The Electric Field of an Electro-Magnetic Wave Is Given by E_y

question 14

Multiple Choice

The electric field of an electro-magnetic wave is given by E_y = 25 sin(2.4 $\times$ 10⁶ $\pi$ (x - 3.0 $\times$ 10⁸t) ) .What is the frequency of the wave?

• A)4.8 \(\times\) 10⁷ s^-1
• B)3.6 \(\times\) 10¹⁴ s^-1
• C)1.2 \(\times\) 10⁶ s^-1
• D)2.3 \(\times\) 10¹⁵ s^-1
• E)none of the above

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Definitions:

Response Rate

The percentage of people selected for a sample who actually completed a survey.

Confidence Interval

A range of values derived from sample statistics that is likely to contain the value of an unknown population parameter.

Sampling Frame

The individuals or clusters of individuals in a population who might actually be selected for inclusion in the sample.

Quota Sampling

A sampling method where the selection of participants is based on pre-specified characteristics or quotas to ensure representation.