The excess deuterium in Venus' atmosphere indicates that Venus currently has substantial amounts of water on its surface
a. True
b. False
Indicate whether the statement is true or false
False
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Nuclear Binding Energy: The neutral 
Al atom has a mass of 26.981539 u; a neutral hydrogen atom has a mass of 1.007825 u; a neutron has a mass of 1.008665 u; and a proton has a mass of 1.007277 u. What is the binding energy per nucleon for 
Al? (1 u = 931.5 MeV/c2)
A. 8.3 MeV B. 6.7 MeV C. 5.4 MeV D. 3.4 MeV E. 2.8 MeV
The stars in our sky twinkle in brightness and color because of ________
A) rapid changes in the brightnesses and colors of stars caused by changes in their spectra B) turbulence in the Earth's atmosphere C) the bubbling and boiling of gases on the surfaces of stars D) light pollution
If a car accelerates at a uniform 4.0 m/s2, how long will it take to reach a speed of 80 km/hr, starting from rest?
What will be an ideal response?
The force that holds a satellite in orbit around Earth is caused by
a) the gravitational pull of Earth. b) friction as the satellite moves through the air. c) the thrust of a jet engine always being fired toward the center of the Earth. d) conservation of angular momentum.