Identify the true statement. a. All polarity chrons are the same length of time; they differ only in the magnetic strengths they represent. b. The series of rock stripes perpendicular to and bilaterally symmetric across the mid-ocean ridge records the sequence of the Earth's magnetic reversals over time. c. The width of each rock stripe is a measure of how long the polar direction took to change. d. Positive magnetic anomalies occur over areas of seafloor when the poles of the Earth's magnetic field and the paleopoles preserved in the seafloor basalt agree.
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Physics, 22.06.2019 04:30
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
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Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points
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Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=
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Identify the true statement. a. All polarity chrons are the same length of time; they differ only in...
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