21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
6th Edition
ISBN: 9780393874921
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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Chapter 5.3, Problem 5.3CYU
To determine
The fastest approaching object in the given values of Doppler shift.
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Question 22 (
If the Mach number is 2.2 and the speed of an airplane measured by radar is 2115 km/h, what is the local speed of
sound and the temperature of air?
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1. A person holds a rifle horizontally and fires at a target. The bullet has a
muzzle speed of 180 m/s, and the person hears the bullet strike the target
1.20 s after firing it. The air temperature is 81°F. What is the distance to
the target?
m
My heart beats 124 times in two minutes. Determine the frequency of my heartbeat.
O 2.0 Hz
O 0.48 Hz
O 1.03 Hz
O None of the above
Chapter 5 Solutions
21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
Ch. 5.1 - Prob. 5.1ACYUCh. 5.1 - Prob. 5.1BCYUCh. 5.2 - Prob. 5.2CYUCh. 5.3 - Prob. 5.3CYUCh. 5.4 - Prob. 5.4CYUCh. 5.5 - Prob. 5.5CYUCh. 5 - Prob. 1QPCh. 5 - Prob. 2QPCh. 5 - Prob. 3QPCh. 5 - Prob. 4QP
Ch. 5 - Prob. 5QPCh. 5 - Prob. 6QPCh. 5 - Prob. 7QPCh. 5 - Prob. 8QPCh. 5 - Prob. 9QPCh. 5 - Prob. 10QPCh. 5 - Prob. 11QPCh. 5 - Prob. 12QPCh. 5 - Prob. 13QPCh. 5 - Prob. 14QPCh. 5 - Prob. 15QPCh. 5 - Prob. 16QPCh. 5 - Prob. 17QPCh. 5 - Prob. 18QPCh. 5 - Prob. 19QPCh. 5 - Prob. 20QPCh. 5 - Prob. 21QPCh. 5 - Prob. 22QPCh. 5 - Prob. 23QPCh. 5 - Prob. 24QPCh. 5 - Prob. 25QPCh. 5 - Prob. 26QPCh. 5 - Prob. 27QPCh. 5 - Prob. 28QPCh. 5 - Prob. 29QPCh. 5 - Prob. 30QPCh. 5 - Prob. 31QPCh. 5 - Prob. 32QPCh. 5 - Prob. 33QPCh. 5 - Prob. 34QPCh. 5 - Prob. 35QPCh. 5 - Prob. 36QPCh. 5 - Prob. 37QPCh. 5 - Prob. 38QPCh. 5 - Prob. 39QPCh. 5 - Prob. 40QPCh. 5 - Prob. 41QPCh. 5 - Prob. 42QPCh. 5 - Prob. 43QPCh. 5 - Prob. 44QPCh. 5 - Prob. 45QP
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- During a thunderstorm, a frightened child is soothed by learning to estimate the distance to a lightning strike by counting the time between seeing the lightning and hearing the thunder (Fig. P2.25). The speed vs of sound in air depends on the air temperature, but assume the value is 343 m/s. The speed of light c is 3.00 108 m/s. a. A child sees the lightning and then counts to eight slowly before hearing the thunder. Assume the light travel time is negligible. Estimate the distance to the lightning strike. b. Using your estimate in part (a), find the light travel time. Is it fair to neglect the light travel time? c. Think about how time was measured in this problem. Is it fair to neglect the difference between the speed of sound in cold air (vs at 0C = 331.4 m/s) and the speed of sound in very warm air (vs at 40C = 355.4 m/s)?arrow_forwardWind gusts create ripples on the ocean that have a wavelength at 5.00 cm and propagate at 2.00m/s. What is their frequency?arrow_forwardGiven that x = A cos (t) is a sinusoidal function of time, show that v (velocity) and a (acceleration) are also sinusoidal functions of time. Hint: Use Equations 13.6 and 13.2.arrow_forward
- On December 26, 2004, a great earthquake occurred off the coast of Sumatra and triggered immense waves (tsunami) that killed some 200000 people. Satellites observing these waves from space measured 800 km from one wave crest to the next and a period between waves of 1.0 hour. The speed of the waves were 800 km/h. How does the speed of the wave help you understand why the waves caused such devastation?arrow_forwardQuestion 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. A Moving to another question will ave this response. ch 45arrow_forwardA stone is dropped in to a well 44.1 m deep. After how much time the sound will be heard if the velocity of sound is 330 m/s 83. (a) 6 sec (b) 3.13 sec (c) 6.26 sec (d) 1.56 secarrow_forward
- You 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 (temperature of air is 32 oC) and the time it takes for the sound to return to you is 20.0 s. How far away are the cliffs?arrow_forwardAn osprey (a type of hawk) has a distinct call: a whistle at 2100 Hz. An osprey calls while diving at you — you’ve gotten too close to her nest and she wants to drive you away! The frequency you perceive is 2400 Hz. How fast is the osprey approaching? (The speed of sound in air varies with temperature, but in this problem you can take it to be 343 m/s, the speed at 20◦C.)arrow_forwardA dolphin in seawater at a temperature of 25°C emits a sound wave directed toward the ocean floor 138 m below. How much time passes before it hears an echo? (The speed of sound in ocean water is 1533 m/s.) Additional Materials O eBook Stephen Frink/Pho tographer's Choice/Getty Imagesarrow_forward
- -3 A т – 18 3 -3 B 1– -2 3.0 2.5 2.0 1.5. 1.0 0.5 – B -3.D -2.5 -2.0 -1.5 C 100 B -1.0 т -05arrow_forward6. A train moving at a constant speed is passing a stationary observer on a platform. On one of the train cars, a flute player is continually playing the note known as concert A (f- 440 Hz). After the flute has passed, the observer hears the sound with a frequency Hz. What is the speed of the train? The speed of sound in air is 343 m/s. of 415arrow_forwardSound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? A. 1.8 km, 0.15 km B. 2.2 km, 0.20 km C. 2.8 km, 0.25 km D. 3.3 km, 0.30 kmarrow_forward
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