The Greenland ice sheet can be one km thick. Estimate the pressure underneath the ice where it is 0.80 km deep. (The density of ice is 918 kg/m3.)
a. 9.0 × 10^5 Pa (9 atm)
c. 7.2 × 10^6 Pa (72 atm)
b. 2.5 × 10^6 Pa (25 atm)
d. 9.0 × 10^6 Pa (90 atm)
C
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The mass of 6 million atoms of a diatomic gas is 
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A. 25.5 u B. 51.0 u C. 2.55 u D. 5.10 u
How can the Doppler Effect be used to determine if a storm is forming into a tornado?
What will be an ideal response?
150 g of liquid nitrogen at its boiling point of 77.0 K is stirred into a beaker containing 510 g of 18.0°C water. If the nitrogen leaves the solution as soon as it turns to gas, how much water freezes? The heat of vaporization of nitrogen is 48.0 cal/g and that of water is 80.0 cal/g
a. none b. 21 g c. 42 g d. 11 g e. 63 g
Which way does the Sun appear to move along the ecliptic from day to day?
What will be an ideal response?