Describe the three sources of internal heat of the terrestrial planets.
Fill in the blank(s) with the appropriate word(s).
Answer: Accretion is heat generated by the agglomeration of planetesimals when the planet was formed. Differentiation is heat generated by the energy released as dense objects fall toward the center of a planet during the formation of the core of a planet. Radioactive decay generates heat by releasing nuclear energy when an unstable (radioactive) isotope decays into a more stable element.
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A current-carrying coil of wire is
A) a superconductor. B) a superconducting magnet. C) an electromagnet. D) a magplane in the making.
What is the highest-order (m value) maximum for wavelength 450 nm that can be obtained with a grating with 300 lines per mm?
a. 8 b. 3 c. 7 d. 4
Write the equation of a wave, traveling along the +x axis with an amplitude of 0.02 m, a frequency of 440 Hz, and a speed of 330 m/sec
a. y = 0.02 sin [880?(x/330 ? t)] b. y = 0.02 cos [880? x/330 ? 440t] c. y = 0.02 sin [880?(x/330 + t)] d. y = 0.02 sin [2?(x/330 + 440t)] e. y = 0.02 cos [2?(x/330 + 440t)]
The meridian at 0 degrees is:
What will be an ideal response?