The speed of light in a material is 1.74 × 10^8 m/s. What is the index of refraction of this material?
a. 1.72
b. 0.58
c. 1.74
d. 0.218
a
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A car moving east collides with a truck moving north. The vehicles have the same speed but the truck has twice the mass of the car. If the vehicles stick together after the collision, what is the path followed by the vehicles after the collision?
A. A B. B C. C D. D E. E
Two speakers in an automobile emit sound waves that are in phase at the speakers. One speaker is 40 cm ahead of and 30 cm to the left of the driver's left ear. The other speaker is 50 cm ahead of and 120 cm to the right of the driver's right ear. Which of the following wavelengths is(are) in phase at the left ear for the speaker on the left and the right ear for the speaker on the right?
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A circuit breaker connects two parts of a circuit if the current flowing in the circuit is too large
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