What was Neptune's Great Dark Spot?
What will be an ideal response?
Neptune's Great Dark Spot was located in the southern hemisphere and rotated around its center counterclockwise, with a period of about 16 days. Like the Great Red Spot, it appeared to be caused by gas rising from its planet's interior. Unexpectedly, when the Hubble Space Telescope began imaging Neptune in 1994, the Great Dark Spot was gone, and new cloud features were seen appearing and disappearing in Neptune's atmosphere
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An uncharged metal sphere is placed on an insulating puck on a frictionless table. While being held parallel to the table, a rod with a charge q is brought close to the sphere, but does not touch it. As the rod is brought in, the sphere
a. remains at rest. b. moves toward the rod. c. moves away from the rod. d. moves perpendicular to the velocity vector of the rod. e. moves upward off the puck.
Besides comets and meteorites, we also find organic molecules in the ________ clouds in deep space
Fill in the blank(s) with correct word
If an electron moves in a magnetic field,
A. it always feels a force. B. it only feels a force if its velocity vector is parallel (or antiparallel) to the direction of the magnetic field. C. it does not feel a force if it is in motion, only if stationary. D. it only feels a force if its velocity vector is not parallel (or antiparallel) to the direction of the magnetic field.
Which of the following telescopes is best suited for studying the hottest intergalactic gas (10 million K) in a cluster of galaxies?
Which of the following telescopes is best suited for studying the hottest intergalactic gas (10 million K) in a cluster of galaxies?