College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A ship sends a signal out to determine the depth of the ocean. The signal returns 2.5seconds later. If sound travels at 1450 m.s−1 in sea water, how deep is the ocean at that point? Convert your answer into kilometers.
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- V= 331m/a + (0.6m/s degrees Celsius )T Determine the speed of sound on a cold winter day(T=3degrees C)arrow_forwardYou are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. You use your fog horn to send out a blast of sound (assume the temperature of the air is 20 oC) and the time it takes for the sound to return to you is 20.0 s. How far away are the cliffs (in metric units)? Hint: Be careful and think about the physics of the problem. You may want to make a sketch of the situation to help you determine the answer. 1798 m 3444 m 3596 m 7192 marrow_forwardThe equation of a traveling wave is (x, t) = 0.02 cos(0.25x - 500t), where the units are SI. The velocity of the wave is O 0.13 km/s. O 4.0 m/s. O 0.50 km/s. O 2.0 km/s. O 10 m/s.arrow_forward
- A Moving to another question will save this response. Question 2 If the speed of sound in air at 0 °C is 331 m/s. What will be the speed of sound in air at 50 °C? 299 m/s 142 m/s 331 m/s 360 m/s None of these. AMoving to another question will save this response. ch 45arrow_forwardA tsunami generated off the coast of Chile in 1990 traveled nearly 6500 miles to the coast of Honolulu in 17 hours. Determine the speed in mi/hr and m/s. If the average width of such waves was 22 m, what was the average frequency of such a devastating tsunami? (Given: 1.0 m/s = 2.24 mi/hr) O 382 mi/h, 171 m/s, 7.8 Hz 283 mi/h, 126 m/s, 5.7 Hz O 402 mi/h, 180 m/s, 8.16 Hz O 117 mi/h, 52.3 m/s, 2.4 Hzarrow_forwardOutside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature is 60 degrees at midnight and the high and low temperature during the day are 70 and 50 degrees, respectively. Assuming t is the number of hours since midnight, find an equation for the temperature, D, in terms of t. D(t) =arrow_forward
- The speed of sound is temperature dependent and can be determined by the formula: v(sound) = 331 + 0.6 T(C), where v is the speed of sound in m/s and T is temperature in degrees C. If a sound wave is determined to have a frequency of 1,000 Hz and a wavelength of 35 cm. a) What is the speed of this wave? b) Use the given formula to determine the temperature of the air? c) Based on your temperature result, how would you categorize the air as WARM or COLD?arrow_forwardThe captain of a boat notes that in a time period of t=8 mins, the boat goes up and down n=13 times. a)what expression describes the frequency of the ocean wave, "f". b) what is the frequency, in hertz? (f=) c) if the crests are d=100.0m apart how fast are the waves traveling in meters per second? (v=)arrow_forward30 m from an ultrasonic sensor. The total travel time of the ultrasonic wave is 33 ms (milliseconds). What is the speed of sound in these conditions?arrow_forward
- The motion detectors used in our labs are ultrasonic, operating at 25,000 Hz. In a lab room where the temperature is 30 °C, what is the wavelength of these waves? Answer in centimeters. Use 3 sig figs (which is 2 decimal places).arrow_forwardIn the upper atmosphere at altitudes where commercial airlines travel, we find extremely cold tempera-tures. What is the speed of sound (in metric units) for a temperature of -55 ◦ C? Calculate to one decimal.arrow_forward3. The VE3KBR transmitter near Tokyo broadcasts on a frequency of 146.940 MHz. The transmitter is broadcasting a test sound that is picked up by a nearby amateur radio. The test sound has a frequency of 1 kHz and a wavelength of 33 cm. a) What is the wavelength of the transmitter’s radio wave (in metres)? b) What is the speed of the sound wave that is coming out of the radio (in m/s)?arrow_forward
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