The fact that light can be polarized shows that light is
a. polar. b. monochromatic.
c. an electromagnetic wave. d. a transverse wave.
d
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The horizontal surface on which the objects slide is frictionless. If M = 1.0 kg and the magnitude of the force of the small block on the large block is 5.2 N, determine F.
A. 6.0 N B. 9.0 N C. 7.8 N D. 4.8 N E. 4.1 N
An airplane needs to reach a forward velocity of to take off. On a runway, what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest?
A) 0.79 m/s2 B) 0.87 m/s2 C) 0.95 m/s2 D) 1.0 m/s2
The simplest life forms appeared on Earth by the time it was how old?
A) five million years B) one billion years C) 2.5 billion years D) 3.5 billion years E) 4.5 billion years
The 21 cm line of hydrogen is strongly absorbed by interstellar dust
Indicate whether the statement is true or false