Saturn's magnetic field is weaker than Jupiter's because it has less ________
Fill in the blank(s) with correct word
metallic hydrogen.
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Estimation: Estimate the number of times an average person's heart beats in a lifetime. Assume the average heart rate is 69 beats/min and a life span of 75 years.
A. 3 × 109 beats B. 3 × 108 beats C. 3 × 1010 beats D. 3 × 107 beats
Galileo's observation of sunspots showed that ________.
A. planets moved along elliptical orbits around the Sun B. the Sun was not a flawless sphere C. the stars could change D. Earth revolved around the Sun E. None of these choices is correct.
A charged particle moving with a certain velocity along the +x-axis enters a magnetic field pointing toward the +z-axis. Because of an electric field along the +y-axis the charge particle continues to move along the +x-axis
What is the sign of this particle? A) positive B) negative C) The particle could be either positive or negative. D) None of the other choices is correct.
The annual amount of snow lost by a glacier is called
A) accumulation. B) sublimation. C) ablation. D) sustation.