Speed is to velocity as distance is to
A) magnitude.
B) acceleration.
C) displacement.
D) direction.
E) temperature.
C
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Process of Science: Since scientists can't follow the stellar formation process of a single star from start to finish, how do they study solar life cycles?
What will be an ideal response?
Among these choices, which is the first thing that happens in thehistory of the universe?
a) formation of nuclei of helium b) binding of electrons to nuclei c) first stars form d) universe becomes transparent e) first supernova explosions occur
Suppose you wanted to hold up an electron against the force of gravity by the attraction of a fixed proton some distance above it
How far above the electron would the proton have to be? (k = 1/4??0 = 9.0 × 109 N ? m2/C2, e = 1.6 × 10-19 C, mproton = 1.67 × 10-27 kg, melectron = 9.11 × 10-31 kg) A) 4.6 m B) 3.7 m C) 5.1 m D) 2.3 m E) 1.5 m
An iron specimen
