A river or small stream that curves back and forth across its valley is
What will be an ideal response?
Meandering Stream
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The expansion rate of the Universe is:
A) increasing. B) decreasing. C) constant. D) different in different directions. E) independent of time.
Satellite Motion: The innermost satellite of Jupiter orbits the planet with a radius of 422 × 103 km and a period of 1.77 days. What is the mass of Jupiter? (G = 6.67 × 10-11 N ? m2/kg2)
A. 1.33 × 1027 kg B. 1.50 × 1027 kg C. 1.72 × 1027 kg D. 1.89 × 1027 kg E. 3.08 × 1027 kg
Bottles of perfume sometimes have thick glass (n = 1.5) walls which give the impression the volume is larger than it is. Assume a cylindrical bottle has an inner radius of 1.0 cm and an outer radius of 2.0 cm. How thick (in cm) would the wall appear if you could see a mark on the inside surface?
a. 0.80 b. 0.51 c. 0.72 d. 80 e. 12
Where would very large craters have formed?
a. on the Moon. b. on Mercury. c. on Earth. d. all of the above.