If the current through a 5 ohm and a 10 ohm resistor in series is 4 amps, then the total voltage drop across both of these resistors will be
a. 15 b. 20 c. 60 d. 120 volts
c
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The materials that made up the solar nebula can be categorized into these four general types. Rank these materials from left to right based on the temperature at which each would condense into a solid, from highest to lowest. Note: For a substance that does not condense at all, rank it as very low temperature.
What will be an ideal response?
What is one difference between a rad and a rem?
a. A rad measures an amount of radiation and a rem measures a biological effect. b. A rad measures a biological effect and a rem measures an amount of radiation. c. Rem is an older term for rad. d. One rem equals 100 rads. e. One rad equals 100 rems.
The change in entropy of a mass m of a solid substance which has a latent heat of fusion L and melts at a temperature T is
a. LT/m b. mL ln(T) c. mLT d. mL/T e. L/mT
The fact that Venus' atmosphere contains carbon dioxide was discovered:
A) by the Magellan spacecraft. B) in early spectroscopic studies. C) by the Venera spacecraft. D) in radar studies. E) through CCD imagery.