Hydrocarbons that have the composition that satisfies the general formula CnH2n can be either alkenes or ______________
Fill in the blank(s) with correct word
cycloalkanes
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According to the theory that active galactic nuclei are powered by supermassive black holes, the energy released as light comes from
A) nuclear fusion in the accretion disk surrounding the black hole. B) gravitational potential energy released by matter that is falling toward the black hole. C) matter-antimatter annihilation occurring just outside the event horizon of the black hole. D) jets emerging from the accretion disk.
A long straight wire lies on a horizontal table and carries an ever-increasing current toward the north. Two coils of wire lie flat on the table, one on either side of the wire
When viewed from above, the direction of the induced current in these coils is A) clockwise in both coils. B) counterclockwise in both coils. C) clockwise in the east coil and counterclockwise in the west coil. D) counterclockwise in the east coil and clockwise in the west coil.
Two very large parallel metal plates, separated by 0.20 m, are connected across a 12-V source of potential. An electron is released from rest at a location 0.10 m from the negative plate
When the electron arrives at a distance 0.050 m from the positive plate, how much kinetic energy has the electron gained? (e = 1.60 × 10-19 C) A) 7.2 × 10-19 J B) 2.4 × 10-19 J C) 9.6 × 10-19 J D) 4.8 × 10-19 J
If Earth is closest to the Sun in January, why is much of the Northern Hemisphere cold in January?
A) It is cold because it is winter. B) The Southern Hemisphere is tilted away from the Sun in January. C) Solar energy favors the equatorial regions. D) The Northern Hemisphere is tilted away from the Sun in January.