______________ mountains are believed to have been built by normal faulting in which giant pieces of Earth's crust were tilted and uplifted
Fill in the blank(s) with correct word
Fault-block
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The coldest region of the atmosphere is the
a. stratosphere. b. troposphere. c. mesosphere. d. thermosphere.
An excited atom can lose energy by emitting a __________
Fill in the blank(s) with correct word
A beam of electrons is sent in the positive x-direction in a region with a uniform magnetic field B in the positive y-direction and a uniform electric field E in the positive z-direction. At which of the following speeds would the electrons be deflected in the positive z-direction?
a. v < E/B b. v = E/B c. v > E/B d. There is no speed for which this will happen.
A 100-kW radio station emits EM waves in all directions from an antenna on top of a mountain. What is the intensity of the signal at a distance of 10 km?
a. 8 × 10^?5 W/m2 b. 8 × 10^?6 W/m2 c. 3 × 10^?3 W/m2 d. 0.8 W/m2 e. 2.5 × 10^?5 W/m2