The present motions of the planets were inherited from the rotation of the solar nebula
a. True
b. False
Indicate whether the statement is true or false
True
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The major division of chemistry that deals with what substances are present and in what quantities is called ______________chemistry
Fill in the blank(s) with correct word
____________________ are great lava flows covering 17% of the lunar surface
Fill in the blank(s) with correct word
A 4.0-cm-tall object is placed 50.0 cm from a diverging lens having a focal length of magnitude 25.0 cm. What is the nature and location of the image?
A) a real image, 4.0 cm tall, 20 cm other side of the object B) a virtual image, 4.0 cm tall, 20 cm other side of the object C) a virtual image, 2.0 cm tall, 10 cm other side of the object D) a virtual image, 1.3 cm tall, 16.7 cm same side as the object E) a real image, 1.3 cm tall, 16.7 cm same side as the object
Current: When current is flowing in an ordinary metal wire, the magnitude of the average velocity of the electrons is closest to
A. 10 m/s. B. the speed of light. C. 1 mm/s. D. 1 km/s. E. 1 m/s.