Mark walked 2 miles east, then 1 mile north. how would you determine his
total displacement?
o
a. subtract 1 from 2.
o
b. draw a vector from his starting point to his ending point.
o
c. add 1 and 2
o
d. draw a vector going 3 miles northeast.
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The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

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What causes the formation of ocean currents?