A) neutrinos.
B) matter.
C) dark matter.
D) dark energy.
B) matter.
C) dark matter.
D) dark energy.
A methane molecule is
a. flat and polar.
b. flat and nonpolar.
c. tetrahedral and nonpolar.
d. pyramidal and polar.
c
Physics & Space Science
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Which of the following is a gas?
A) lithium B) carbon C) neon D) sodium
Physics & Space Science
A steady horizontal force lasting for 2.1 s gives a 1.25 kg object an acceleration of 3.2 m/s2 on a frictionless table. What impulse does this force give to the object?
A) 11 kg ? m/s B) 26 kg ? m/s C) 2.6 kg ? m/s D) 8.4 kg ? m/s
Physics & Space Science
A beam of light of wavelength 610 nm passes through a slit that is 1.90 µm wide. At what the angle away from the centerline does the first dark fringe occur?
A) 39.9° B) 18.7° C) 11.4° D) 12.2° E) 9.35°
Physics & Space Science