The peak of Mt. Everest, at 10,900 m, is the highest point above sea level in the world. What is its elevation in miles? (1.00 m = 3.281 ft)
A) 17.6 mi
B) 0.630 mi
C) 6.77 mi
D) 6.20 mi
E) 67.1 mi
C
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A 4.00 kg object is moving at 5.00 m/s EAST. It strikes a 6.00 kg that is at rest. The objects have an elastic collision. The velocity of the 4.00 kg object after the collision is at an angle of 30.0 degrees SOUTH of EAST. The velocity of the 4.00 kg mass after the collision is
A. 5.78 m/s. B. 4.56 m/s. C. 3.55 m/s. D. 1.67 m/s. E. 2.66 m/s.
If a 20-kg object dropped in air has a terminal speed of 60 m/s, what was its acceleration at 30 m/s?
a. 9.80 m/s2 b. 7.35 m/s2 c. 4.90 m/s2 d. 2.45 m/s2 e. More information is needed to answer this question.
Which of the following best describes the predominant scientific view of the origin of life on Earth?
A) We may never know precisely how life arose, but current evidence suggests that life probably can arise naturally under the conditions that prevailed on the early Earth. B) Life probably migrated to Earth from some other world. C) Life arose through a series of extremely unlikely chemical coincidences, making it seem almost miraculous that life ever came to exist at all. D) We can describe with great certainty the precise steps by which life arose on Earth.
The International Space Station is orbiting at an altitude of about 370 km above the earth's surface
The mass of the earth is 5.97 × 1024 kg, the radius of the earth is 6.38 × 106 m, and G = 6.67 × 10-11 N ? m2/kg2. Assuming a circular orbit, (a) what is the period of the International Space Station's orbit? (b) what is the speed of the International Space Station in its orbit? What will be an ideal response?