Of vectors with lengths 5 m, 3 m, and 4 m, which has the greatest magnitude x component?
a. the one with length 5 m b. the one with length 3 m
c. the one with length 4 m d. It could be any of the three.
d
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The Atacama Large Millimeter Array achieves exceptional resolution by using exceptionally:
A) large radio antennas in a fixed array. B) large radio antennas in a mobile array. C) many radio antennas in a fixed array. D) many radio antennas in a mobile array. E) many portions of the electromagnetic spectrum.
Boat 1 goes directly across a stream a distance L and back taking a time t1 . Boat 2 goes down stream a distance L and back taking a time t2 . If both boats had the same speed relative to the water, which of the following statements is true?
a. t2 > t1 b. t2 < t1 c. t2 = t1 d. t2 = 2t1 e. t2 = 0.5t1
The peak of a body's blackbody radiation curve shifts upward as the temperature of the body increases
Indicate whether the statement is true or false
A 60.0-kg man stands at one end of a 20.0-kg uniform 10.0-m long board. How far from the man is the center of mass of the man-board system?
A) 1.25 m B) 2.50 m C) 5.00 m D) 7.50 m E) 9.00 m