When atoms of two elements with a medium difference in electronegativity bond together, the bonding is probably
a. ionic.
b. covalent.
c. polar covalent.
d. metallic.
c
Physics & Space Science
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Light from an object proceeds through 3 lenses, each with magnification 2, -4, 0.2 respectively. The overall magnification is
A) 2 - 4 + 0.2 = -1.8. B) 2 x (-4 ) × 0.2 = -1.6. C) 2/(-4)/0.2 = -2.5. D) +8/5. E) +5/8.
Physics & Space Science
Which of the following radionuclides has the shortest half-life?
a. Potassium-40 b. Uranium-238 c. Carbon-14 d. Uranium-235
Physics & Space Science
Gauss's law may be applied only to charge distributions that are symmetric
Indicate whether the statement is true or false
Physics & Space Science
On the average, in a ferromagnetic domain permanent atomic magnetic moments are aligned ____ to one another
a. antiparallel b. parallel c. perpendicular d. alternately parallel and antiparallel e. randomly relative
Physics & Space Science