The power dissipated in an AC series circuit increases as the phase angle approaches what value?
a. zero
b. 45°
c. 90°
d. 180°
a
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When a boxer is moving away from a punch, the force experienced is reduced because
A) momentum transfer is reduced. B) the time of contact is increased. C) the force is less effective. D) all of the above
The magnitude of a vector can be less than the magnitude of one of its components
Indicate whether the statement is true or false
Order the materials from smallest refractive index to largest refractive index.
=Air =Diamond =Glass =Quartz =Water
Shown following are the primary mirror arrangements and total light-collecting area of five different telescopes. Each mirror uses a different segmented arrangement, but assume that they are all equivalent in quality and in their ability to focus light. Also assume that the telescopes use identical detectors and have the same observing conditions. Rank the telescopes from left to right based on their ability to detect very dim objects, from greatest to least. To rank two (or more) telescopes as equal, drag one on top of the other(s).
