Solenoid: An ideal solenoid having 200 turns and carrying a current of 2.0 A is 25 cm long. What is the magnitude of the magnetic field at the center of the solenoid? (?0 = 4? × 10-7 T ? m/A)
Fill in the blank(s) with the appropriate word(s).
2.0 mT
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Why are there no impact craters on the surface of Io?
A) It is too small to have been bombarded by planetesimals in the early solar system. B) Any craters that existed have been eroded through the strong winds on Io's surface. C) Jupiter's strong gravity attracted the planetesimals more strongly than Io, and thus none landed on its surface. D) Io did have impact craters, but they have all been buried in lava flows. E) Io's thick atmosphere obscures the view of the craters.
The main reason you can walk barefoot on red-hot coals of wood without burning your feet involves
A) low temperature of the coals. B) low conductivity of the coals. C) mind over matter techniques.
Discuss the ring particles orbiting Jupiter, Saturn, Uranus, and Neptune
What will be an ideal response?
Changes in the predicted motion of Uranus led to the search for an eighth planet
Indicate whether the statement is true or false