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Distinguish between these parts of a wave: period, amplitude, wavelength, and frequency. (10 points) For full credits you should describe all four.

What is the wave speed of a certain wave with a frequency of 2 Hz and a 3.5 m wavelength? (3 points)

a) Which has the greater resistance, a thick wire or a thin wire of the same length? (2.5 points)     b) Which has the greater electrical resistance, wet skin or dry skin? (2.5 points)

What is the function of the third prong on the plug of an electric appliance? (3 points)

In a circuit consisting of two lamps connected in series, if the current in one lamp is 2 A, what is the current in the other lamp? (3 points)

When a current-carrying wire is placed in a strong magnetic field, no force acts on the wire. What is probability the orientation of the wires? (3 points)

a) What produces a magnetic field? (3 points)     b) What is the shape of magnetic field about a current-carrying wire? (3 points)     c) What is magnetic domain? (3 points)

(You must type the whole statement.)

You are looking to determine if there is a difference in the reported frequency of PA students and non PA students donating blood. You ask 50 PA students and 50 non PA students if they have donated blood in the past year. Which test should you run to answer your question?

You are creating a survey to assess PA knowledge of prenatal care and are sending your survey to 7 PAs that currently work in OBGYN offices and are asking for feedback on your questions. Which type of validity are you trying to assess?