Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 3sin(2x)cos(5t?), where x is in m and t is in s. What is the wavelength of the interfering waves?
A. 3.14 m
B. 1.00 m
C. 6.28 m
D. 12.0 m
E. 2.00 m
Answer: A
You might also like to view...
Dr. Smith believes that the Hubble constant is H0 = 70 km/s/Mpc. Dr. Jones believes it is H0 = 50 km/s/Mpc. Which statement below automatically follows?
A) Dr. Smith believes that the universe is expanding, but Dr. Jones does not. B) Dr. Smith believes that the Andromeda Galaxy (a member of our Local Group) is moving away from us at a faster speed than Dr. Jones believes. C) Dr. Smith believes that the universe is older than Dr. Jones believes. D) Dr. Smith believes that the universe is younger than Dr. Jones believes. E) Dr. Smith believes that the universe will someday stop expanding, while Dr. Jones believes it will expand forever.
The Young's modulus for aluminum is 7.02 × 10^10 N/m2 . If the speed of sound in aluminum is measured to be 5.10 km/s, find its density (in kg/m3)
a. 11.3 × 10^3 b. 7.80 × 10^3 c. 2.70 × 10^3 d. 29.3 × 10^3 e. 1.40 × 10^3
The beam of electrons that hits the screen of an oscilloscope is moved up and down by:
a. varying the electron's charge. b. electrical charges on deflecting plates above and below the beam. c. gravity. d. a phosphorescent coating.
If a turntable's rotational speed is doubled, then the linear speed of a pet hamster sitting on the edge of the record will
A) double. B) halve. C) remain the same.