Under the correct conditions, two light waves can produce regions of reinforcement and regions of cancellation. This phenomenon is known as
A. polarization.
B. reflection.
C. interference.
D. refraction.
Answer: C
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Force on a Wire: A rigid rectangular loop, measuring 0.30 m by 0.40 m, carries a current of 9.9 A, as shown in the figure. A uniform external magnetic field of magnitude 1.8 T in the -x direction is present. Segment CD is in the xz-plane and forms a 19° angle with the z-axis, as shown. What is the y component of the magnetic force on segment AB of the loop?
A. +5.1 N B. -5.1 N C. +1.7 N D. -1.7 N E. 0.0 N
the path of the Sun through the sky as a result of Earth's orbital motion
What will be an ideal response?
Humans
A) and primates evolved from a common ancestor B) and primates evolved directly from dinosaurs C) and primates evolved directly from birds D) evolved directly from modern primates
Find the change in entropy (in J/K) when 5.00 moles of an ideal monatomic gas are allowed to expand isobarically from an initial volume of 20 cm3 to a final volume of 100 cm3
a. 167 b. 100 c. 67 d. 52 e. 152