Except Mercury's orbit, the rest of the planets' orbital planes are inclined by no more than _____
A) 4.6°
B) 5.2°
C) 6.3°
D) 3.4°
D
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A galaxy's spectrum has a redshift of 30,000 kilometers per second. If the Hubble constant is 75 kilometers per second per megaparsec, how far away from Earth is the galaxy?
A. 1,000 megaparsecs B. 106 megaparsecs C. 400 megaparsecs D. 20 megaparsecs E. 50 megaparsecs
Describe how to find the cumulative effect of two or more forces acting on an object
What would be an ideal response?
Which stars are more common?
A) black holes B) white dwarfs C) White dwarfs and neutron stars are about equally common. D) Neutron stars and black holes are about equally common. E) neutron stars
The process by which material heated from below rises and cooled material sinks is called ________.
A. conduction B. radiation C. convection D. differentiation E. subduction