Two harmonic waves are described by          What is the phase (in rad) of the resultant wave when x = t = 0?

A. 3
B. 0
C. 2
D. 1
E. 4


Answer: D

Physics & Space Science

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_________is a composite with a matrix of bitumen and particles of aggregate.

Fill in the blank(s) with the appropriate word(s).

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Calculate Vout/Vin for the circuit if R = 2.0 k?, C = 0.020 ?F and V = 140 V sin(50,000t). ? ?

A. 0.02 B. 0.45 C. 0.80 D. 0.98 E. 2.2

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The orientation of an image seen projected on a screen by a single lens is always __________

Fill in the blank(s) with correct word

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Life forms in the Precambrian include

A) trilobites, brachiopods and stromatolites. B) cyanobacteria and trilobites. C) the agnatha and the coelacanths. D) stromatolites and certain primitive blue-green algae.

Physics & Space Science