All of the ________ now observed must be primordial
Fill in the blank(s) with correct word
deuterium
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The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H.
When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
A. A. B. B. C. C. D. D. E. E.
At the Three Mile Island reactor
A) meltdown occurred accompanied by a large-scale release of deadly radiation and many deaths. B) although there was considerable damage, there was never much risk of harm to the nearby population. C) the reactor melted down but this was accompanied by only a small release of radiation and no immediate deaths. D) there was only a minor accident. E) Actually nothing occurred--it was all a hoax.
The visible surface of the Sun has a temperature of about ______________ K
Fill in the blank(s) with correct word
An object is placed 10 cm from a convex lens of focal length 20 cm. What is the magnification?
A) 0.50 B) 1.0 C) 1.5 D) 2.0 E) 2.5