Compared to the size of Mercury, Ganymede is ________
Fill in the blank(s) with correct word
larger
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Coulomb's Law: Three equal charges +Q are at three of the corners of a square of side d. A fourth charge +Q of equal magnitude is at the center of the square as shown in the figure Which one of the arrows shown represents the net force acting on the charge at the center of the square?
A. A B. B C. C D. D
How does the velocity of sound in air vary with the air temperature?
When scattering 3.28 Angstrom X-rays from a crystal an interference maximum occurs at a scattering angle of 23.0 degrees. What is the crystal spacing?
A. 4.2 Angstroms B. 16.8 Angstroms C. 6.3 Angstroms D. 8.4 Angstroms
Velma passes Mort at a speed of 0.75c. At this speed, the "time dilation factor" is 1.5. In other words, Mort observes a 1-second tick of Velma's clock to take 1.5 seconds
Suppose that they are born at the same time, and that Velma observes herself to live 30 years. According to Mort's observations, how old is he when Velma dies? A) 10 years B) 30 years C) 20 years D) 40 years E) 45 years