Calcium carbonate is the major component of each of the following except
a. limestone.
b. seashells.
c. stalagmites.
d. bones.
d
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The scarps on Mercury were probably caused by:
A) tectonic activity. B) meteorite bombardment. C) a tidal bulge. D) volcanism. E) the interior cooling and shrinking.
As the air cools at night the relative humidity usually __________
Fill in the blank(s) with correct word
The objective and the eyepiece of a microscope have focal lengths of 4.00 mm and 25.0 mm, respectively. The objective produces a real image 30 times the size of the object
The final image is viewed at infinity, and the near point of the microscope user is at 25.0 cm. What is the distance between the object and the focal point of the objective? A) 0.13 mm B) 0.18 mm C) 0.23 mm D) 0.28 mm E) 0.33 mm
Standing Waves on a String: A guitar-like stringed instrument has a string that is 16 cm long. It sounds the musical note A (440 Hz) when played without fingering. By what distance should you shorten it to play the note C (523 Hz)?
A. 2.5 cm B. 1.7 cm C. 3.4 cm D. 4.2 cm