Both Jupiter and Saturn contain liquid metallic hydrogen
a. True
b. False
Indicate whether the statement is true or false
True
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Radioactive Decay: How long would it take 4.00 × 1020 atoms to decay to 1.00 × 1019 atoms if their half-life was 14.7 years?
A. 29.4 years B. 58.8 years C. 78.2 years D. 147 years
Phase Angles: A series circuit consists of an ac voltage source of frequency 60 Hz and source voltage amplitude 345 V, a resistor of resistance 393 ?, a capacitor of capacitance 2.7 × 10-6 F, and an inductor of inductance L.(a) What must be the value of L for the phase angle of the circuit to be zero?(b) When L has the value calculated in part (a), what is the current amplitude in the circuit?
What will be an ideal response?
A loop of gas following the magnetic field lines between sunspots' poles is:
A) a flare. B) a ray. C) a coronal hole. D) a prominence. E) a coronal mass ejection.
What is meant by Occam's Razor?
A) a well-designed experiment that clearly shows the differences between two competing theories B) a poorly designed experiment that fails to show the difference between two competing theories C) the idea that scientists should prefer the simpler of two models that agree equally well with observations D) the fine line between science and pseudoscience E) the shaving implement of a medieval scholar