On Mars, the average temperature is -64 °F and the average atmospheric pressure is0.92 kPa. (a) What is the number of molecules per volume in theMartian atmosphere? (b) Is the number of molecules per volumeon the Earth greater than, less than, or equal to the number pervolume on Mars? Explain your reasoning. (c) Estimate the numberof molecules per volume in Earth’s atmosphere

On Mars, the average temperature is -64 °F and the average atmospheric pressure is0.92 kPa. (a) What is the number of molecules per volume in theMartian atmosphere? (b) Is the number of molecules per volumeon the Earth greater than, less than, or equal to the number pervolume on Mars? Explain your reasoning. (c) Estimate the numberof molecules per volume in Earth’s atmosphere

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter7: Gravity

Section: Chapter Questions

Problem 14PQ: Since 1995, hundreds of extrasolar planets have been discovered. There is the exciting possibility...

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You are a rover pilot on the crew of the initial exploration team sent to Kepler 22b,the first extrasolar planet discovered within the habitable zone of a sun-like star. Thescience team recently discovered liquid water on the surface. (Hurrah!) Your rover isat point A on the shore of a circular lake with radius 4 km collecting samples. Thescience team wants to send your rover to a point C diametrically opposite A. Therover can drive around the circumference of the lake at a rate of 4 km per hour andfly over the lake at a rate of 3 km per hour.(a) How long will it take the rover to fly across the lake?(b) How long will it take the rover to drive around the shore of the lake?You could also fly at an angle θ along a chord inside the circular lake, andcomplete the rest of the path driving along the circumference of the lake.(c) Find the length of the chord in terms of θ. How long will it take the drone totraverse the chord?(d) Find the length of the remaining shoreline after the cord in…
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If we send astronauts to Mars, there will be a time delay anytime we send or receive messages to them here on Earth. Given that Mars is an average of 54.6 million km away from Earth, how long is this time delay for a 2-way 'round-trip' communication - sent to Earth, then back to Mars? (this might be important in emergency situations) answer choices a)About 4 minutes. b)About 30 seconds. c)About 10 seconds. d)About 6 minutes.
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