Meteor Crater in Arizona is about 1.2 kilometers across. According to the graph, about how big was the object that made this crater? (Note: Be sure to read the axis labels carefully.)
A) 1 meter
B) 10 meters
C) 100 meters
D) 1 kilometer
C) 100 meters
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Sound waves can interfere with one another so that no sound is produced.
Indicate whether the statement is true or false
An inventor tries to sell you his new engine which takes in 40. Joules of heat at 87°C on each cycle, expels 30. Joules at 27°C, and does 10. Joules of work. Why are you not fooled, and can have him prosecuted as a fraud?
What will be an ideal response?
You live at a latitude of 73° N. What is the angle between the northern horizon and the north celestial pole?
a. 73° b. 27° c. 17° d. 23 ° e. 5°
An observer's nadir is:
A) the point directly opposite the observer's zenith. B) the north point on the observer's horizon. C) directly opposite the north celestial pole. D) the south point on the observer's horizon.