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A wave oscillates 50 times per second. What is its frequency? a.25hertz b.50hertz c.5.0*10^2 d.2.0*10^-2
asked
May 24, 2017
Physics
high-school
2
answers
4
votes
95.0k
views
A carbon-12 atom has 6 protons, 6 neutrons, and 6 electrons. How many protons does a carbon-14 atom have? Question 3 options: 6 8 12 14
asked
May 5, 2017
Physics
middle-school
1
answer
2
votes
223k
views
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