Io experiences strong internal tidal heating because of
A) large amounts of radioactive decay occurring inside the moon
B) the large amount of internal heat left over from its formation
C) the strong tidal forces exerted by the outer Galilean moons, Europa, Ganymede, and Callisto
D) the strong tidal force from the massive Jupiter combined with its elliptical orbit which causes the strength and direction of the force to constantly change
D
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Quasars are____
a. spiral galaxies with unusually luminous nuclei b. elliptical galaxies with very broad emission lines c. explained by the double-exhaust model d. extremely luminous objects with high redshifts e. glowing green gases due to excitation from energy from an active core
Scientific models supported by a large, compelling body of evidence are referred to as
A) facts B) ideas C) theories D) hypotheses
Which of the following charge distributions has the lowest electric potential at the origin? int
Force on a Wire: A wire in the shape of an "M" lies in the plane of the paper. It carries a current of 2.0 A, flowing from A to E. It is placed in a uniform magnetic field of 0.85 T in the same plane, directed as shown on the right side of the figure. The figure indicates the dimensions of the wire. Note that AB is parallel to DE and to the baseline from which the magnetic field direction is measured. What are the magnitude and direction of the net force acting on this wire?
A. 0.40 N perpendicular out of the page B. 0.10 N perpendicular into the page C. 0.40 N perpendicular into the page D. 0.10 N perpendicular out of the page E. 0.20 N perpendicular out of the page