Components: If a vector pointing upward has a positive magnitude, a vector pointing downward has a negative magnitude.
A. True
B. False
Answer: B
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We have direct evidence from ALMA that supports nebular theory
Indicate whether the statement is true or false
The maximum value of the magnetic field component of an electromagnetic wave is 2.81 ?T. What is the rms value of the magnetic field?
A) 2.81 ?T B) 2.46 ?T C) 3.12 ?T D) 3.97 ?T E) 1.99 ?T
Light waves reflected off a body of water are strongly polarized in the horizontal direction. To reduce glare polarized sunglasses are made
A. with the transmission axis horizontal. B. with the transmission axis vertical. C. with the transmission axis at 37°. D. Polarized sunglasses don’t help with glare
A ball thrown vertically from ground level is caught 3.0 s later when it is at its highest point by a person on a balcony which is 14 m above the ground. Determine the initial speed of the ball
a. 19 m/s b. 4.7 m/s c. 10 m/s d. 34 m/s e. 17 m/s