Energy Conservation With Conservative Forces: A roller coaster starting from rest descends 35 meters in its initial drop and then rises 23 meters when it goes over the first hill, which has a circular shape over the top. If a passenger at the top of the hill feels an apparent weight equal to one-half of her normal weight, what is the radius of curvature of the first hill? Neglect any frictional losses.
Fill in the blank(s) with the appropriate word(s).
48 m
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How does the magnetic tilt of Jupiter compare with our field?
A) Both are exactly perpendicular to our equator, aligned with our rotation axis. B) Jupiter's lies perpendicular to the ecliptic, while ours is tilted 23.5 degrees. C) Both are tilted about 10 degrees, but Jupiter is opposite in polarity. D) Both are tilted about 27 degrees, much like Saturn's. E) Like Uranus, Jupiter is flopped over on its side.
A Compton scattering experiment is performed in which the scattered photons have a maximum energy of 17.2 keV. What was the incident energy of the photons used in this experiment?
A. 16.6 keV B. 18.5 keV C. 16.1 keV D. 17.8 keV
About where is our solar system located within the Milky Way Galaxy?
A) at the center of the galaxy B) about 10 percent of the way from the center of the galaxy to the edge of the galactic disk C) about halfway from the center of the galaxy to the edge of the galactic disk D) near the far edge of the galactic disk E) in the halo of the galaxy above the galactic disk
A parallel-plate capacitor has a capacitance of 10 mF and is charged with a 20-V power supply. The power supply is then removed and a dielectric material of dielectric constant 4.0 is used to fill the space between the plates
What is the voltage now across the capacitor? A) 80 V B) 20 V C) 10 V D) 5.0 V E) 2.5 V