The tunneling current in an STM is _________dependent upon the negative of the gap between the tip and the specimen.
Fill in the blank(s) with the appropriate word(s).
exponentially
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How is the existence of Earth's unique atmosphere explained?
A) The oxygen in Earth's atmosphere is a result of early life on Earth. B) Volcanic gases containing nitrogen were outgassed from Earth's interior. C) As Earth cooled, water vapor fell out of the atmosphere to form the oceans. D) Ultraviolet radiation from the Sun freed the hydrogen, allowing it to escape. E) When Earth formed, its atmosphere formed from the gases most common in the early solar system.
At the end of 1/2 second an apple freely falling from rest has a speed of
A) 1 m/s. B) 5 m/s. C) 10 m/s. D) more than 10 m/s.
If Earth's mass decreased to one-half its original mass with no change in radius, your weight would
A) decrease to one-quarter. B) decrease to one-half. C) remain the same. D) none of the above
An ambulance with its siren on is heading due east along a straight road at 60 mph. A car is also moving along the same road. In which case will the driver of the car perceive the frequency of the siren to be lowest?
a. The car is moving east at 65 mph and is behind the ambulance b. The car is moving west at 65 mph and is behind the ambulance. c. The car is moving east at 65 mph and is in front of the ambulance. d. The car is moving west at 65 mph and is in front of the ambulance.