The solar wind is created in the Sun's ________.
A. corona
B. convection zone
C. radiation zone
D. core
Answer: A
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____ are believed to have formed on Mercury when the planet's interior cooled and shrank
a. Jumbled terrain b. The highlands c. Maria d. Lobate scarps e. Sinuous rilles
Which one of the following quantities can be measured by performing a Hall effect measurement?
a) magnetic monopole strength b) charge of the electron c) number density of charge carriers d) acceleration of an electron e) work function
A flat circular coil has 200 identical loops of very thin wire. Each loop has an area of 0.12 m2 and carries 0.50 A of current. This coil is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop
What is the magnitude of the magnetic torque on the coil? A) 0.25 N ? m B) 0.52 N ? m C) 2.5 N ? m D) 5.2 N ? m
Why have most extrasolar planets detected with the transit method been found with orbits fairly close to their host stars?
A) They transit more frequently and are more likely to be detected in the short time we have been searching for them. B) More of the starlight is blocked by the planet when it transits the star. C) The wavelength shift of the star's spectrum is larger. D) The closer to a star, the hotter and therefore brighter the planet is. E) Planets that are close to a star are heated up and therefore larger.