A stream that is capable of transporting the average sediment load provided to it over time
What will be an ideal response?
Graded stream
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An ideal gas has a pressure of 2.5 atm, a volume of 1.0 L at a temperature of 30°C. How many molecules are there in this gas?
(R = 8.31 J/mol ? K,1.00 atm = 101 kPa, NA = 6.022 × 1023) A) 6.1 × 1023 B) 6.0 × 1022 C) 2.4 × 1022 D) 2.3 × 1023
Consider two future observatories in space:
Observatory A consists of a single 50-meter telescope. Observatory B is an interferometer consisting of five 10-meter telescopes, spread out over a region 100 meters across. Which observatory can detect dimmer stars, and which one can see more detail in its images? (Assume all else is equal, such as quality of optics, types of instruments, and so on.) A) Observatory A can detect dimmer stars, and Observatory B reveals more detail in images. B) Observatory B can detect dimmer stars, and Observatory A reveals more detail in images. C) Observatory A both detects dimmer stars and reveals more detail in images. D) Observatory B both detects dimmer stars and reveals more detail in images. E) Both observatories have the same capabilities, but Observatory B would be cheaper to build.
A satellite is in a circular orbit 600 km above the Earth's surface. The acceleration of gravity is 8.21 m/s2 at this altitude. The radius of the Earth is 6400 km. Determine the speed of the satellite, and the time to complete one orbit around the Earth
One explanation of the dark sky Olbers's Paradox is that light can reach us only from objects in space out to a distance in light years _______ the age of the universe in years
a. less than b. greater than c. equal to d. less than or equal to e. greater than or equal to