Galactic cannibalism refers to
a. binary galaxies.
b. the merging of galaxies.
c. galaxies drawing in gas from the intergalactic medium.
d. the destruction of a galaxy's globular clusters by the galaxy's nucleus.
e. None of the other choices are correct.
b
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A slab of concrete and an insulating board are in thermal contact with each other. The temperatures of their outer surfaces are 68°F and 50°F. Determine the rate of heat transfer (in BTU/ft2?h) if the R values are 1.93 and 8.7 ft2?°F?h/BTU, respectively.
A. 9.7 B. 2.5 C. 5.3 D. 1.7 E. 28
Inelastic Collisions: A 1000-kg whale swims horizontally to the right at a speed of 6.0 m/s. It suddenly collides directly with a stationary seal of mass 200 kg. The seal grabs onto the whale and holds fast. What is the speed of these two sea creatures just after their collision? You can neglect any drag effects of the water during the collision.
A. 0.00 m/s B. 3.0 m/s C. 4.0 m/s D. 5.0 m/s E. 6.0 m/s
Clovis wants to lose weight. Clotilde tells him that he will be thin enough for her if he travels past her at 0.600c. If the distance she sees from the front of his stomach to his back is then 24.0 cm, what distance in cm does she see when he is standing still?
A. 15.4 B. 19.2 C. 24.0 D. 30.0 E. 37.5
A very long straight wire carrying 2.0 A lies along the x-axis. A second very long parallel wire carrying 3.0 A in the same direction is positioned parallel to the x-axis and passes through the point (0, 1.0 m)
What is the magnitude of the magnetic field at the point (0, 0, 1.0 m)?