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In an X-ray tube, why are the electrons the only ones that move during an exposure, rather than the protons?

When using the Right-Hand Thumb Rule for a conductor, if your thumb is pointing in the direction of the electrical current, the “curl” of your four fingers represents:

A series circuit is powered by a 12V battery and contains two identical lightbulbs. If a third identical lightbulb is added to the string in series, what will happen to the brightness of the original two bulbs?

Two magnets are placed in a radiology laboratory. Magnet A has a magnetic flux density of 30 G and Magnet B has a density of 40 G. If they are placed at a distance of 2 meters apart, what is the resulting force of attraction between them?

This is a diagram of what type of circuit: The total resistance for this circuit is: The total amperage flowing in this circuit is: The Voltage through the 24 Ohm resistor is:

In a standard bar magnet used in a radiology lab, how do the magnetic lines of force (flux) behave to form a complete circuit?

A step-up transformer operates on the principle of Mutual Induction. For this to occur, which of the following must be true?

Throughout these 2 chapters, Dr. Romero performed three in-class demonstrations.  None of them were that impressive, but they did illustrate some concepts.  Choose one demonstration and describe it in 2-3 complete sentences.

Organisms that can produce their own food are in general called a(n) ___________ . These include cyanobacteria, plants and some protists.

Give one musical fact for Richard Wagner.