Which of the following statements about Saturn's moon Titan is not true?
A) It rains liquid methane and ethane.
B) Its atmosphere contains abundant oxygen.
C) Its temperature is too cold for liquid water to exist on its surface.
D) Its surface is hidden from view by a thick atmosphere.
E) It orbits Saturn.
B) Its atmosphere contains abundant oxygen.
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_____ is the closest planet to the Sun
A) Earth B) Venus C) Mercury D) Mars
The frost line of the solar system was located approximately between
A) the Sun and the present-day orbit of Mercury. B) the present-day orbits of Mercury and Venus. C) the present-day orbits of Mars and Jupiter. D) the present-day orbits of Venus and Earth. E) the present-day orbits of Uranus and Neptune.
Torque: A flat rectangular loop of wire is placed between the poles of a magnet, as shown in the figure. It has dimensions w = 0.60 m and L = 1.0 m, and carries a current I = 2.0 A in the direction shown. The magnetic field due to the magnet is uniform and of magnitude 0.80 T. The loop rotates in the magnetic field and at one point the plane of the loop is parallel to the field. At that instant, what is the magnitude of the torque acting on the wire due to the magnetic field?
A. 0.00 N ? m B. 0.40 N ? m C. 0.48 N ? m D. 0.83 N ? m E. 0.96 N ? m
What are comets made of?
A) silicates and rocky dust B) metallic dust particles C) dark colored complex hydrocarbons D) methane, ammonia, and water ice E) All of the above.