Extraterrestrial life is defined to be
A) life found beyond the Earth which is based on the same biology and chemistry as life on Earth
B) advanced life forms that have visited the Earth
C) any kind of life found beyond the Earth
D) advanced life found on Earth-like planets around other stars
C
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Two long wires are parallel to each other. One wire carries a current directed due east and the other carries a current of the same magnitude, but directed due west. Which one of the following statements concerning this situation is false?
a) The magnetic field in the plane of the wires at the midpoint between the two wires is equal to zero tesla. b) The magnetic forces due to the currents carried by the wires causes the wires to move apart. c) If you are looking toward the west along the wire carrying the current toward the west, the magnetic field lines are directed clockwise around the wire d) The magnetic field produced by each wire has its greatest magnitude outside, but near the surface of the wire.
The speed of light in the void between molecules in glass is
A) more than its speed in a vacuum. B) the same as its speed in a vacuum. C) less than its speed in a vacuum.
In the respiration reaction
A) carbon combines with such biological molecules as DNA. B) oxygen combines with the carbon in such biological molecules as glucose. C) CO2 combines with the carbon in such biological molecules as glucose. D) CO2 combines with H2O. E) oxygen combines with such biological molecules as DNA.
In order, from top to bottom, in the activity series come K, Zn, Pb, H, Cu, and Au. Therefore,
a. adding Pb to ZnCl2 will release Zn. b. adding Cu to HCl will release hydrogen. c. adding Au to HCl will release hydrogen. d. adding Cu to AuCl3 will release Au.