Which of the following is not produced by plate tectonics?
a. mid-ocean rifts
b. rift valleys
c. the ring of fire
d. the Appalachian Mountains
e. Earth's magnetic field
e
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Two vibrating tuning forks, held side by side, will create a beat frequency of what value if the individual frequencies of the two forks are 306 Hz and 300 Hz, respectively?
a. 606 Hz b. 303 Hz c. 294 Hz d. 6.00 Hz e. 300 Hz
Which of the following is NOT a guidelines for optimizing multimedia for efficient web delivery?
A. Include only high-bandwidth versions. B. Inform the visitor of and provide links to necessary plug-ins. C. Provide options for full-screen viewing of videos or animations. D. Break audio and video files into short segments to create smaller files.
On a velocity-time graph for a particle, suppose the plot starts at some positive velocity and then follows a straight line to zero at a later time. Which of the following must be true about a position vs. time graph for this same time interval?
a. The curve will start at a positive position value and follow a straight line to zero at the later time. b. The curve will rise steeply at first and as time goes on will level out approaching its highest position value at the later time. c. The curve will drop steeply at first and as time goes on will approach its lowest position value at the later time d. The curve will start at the zero of position and follow a straight line to its highest position at the later time.
The Tharsis region of Mars was most likely formed
A) from sediment that piled up due to past water erosion B) by plate tectonics C) by a plume of molten mantle material rising to the surface forming a bulge D) from compressions in the Martian crust as the planet cooled and contracted