The Physical Universe
15th Edition
ISBN: 9780073513928
Author: Konrad Krauskopf, Arthur Beiser
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 7, Problem 16E
A violin string vibrates 1044 times per second. How many vibrations does it make while its sound travels 20 m?
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air is pushed steadily though a forced air pipe at a steady speed of 4.0 m/s. the pipe measures 56 cm by 22 cm. how fast will air move though a narrower portion of the pipe that is also rectangular and measures 32 cm by 22 cm
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13.87 ... Interplanetary Navigation. The most efficient way
to send a spacecraft from the earth to another planet is by using a
Hohmann transfer orbit (Fig. P13.87). If the orbits of the departure
and destination planets are circular, the Hohmann transfer orbit is an
elliptical orbit whose perihelion and aphelion are tangent to the
orbits of the two planets. The rockets are fired briefly at the depar-
ture planet to put the spacecraft into the transfer orbit; the spacecraft
then coasts until it reaches the destination planet. The rockets are
then fired again to put the spacecraft into the same orbit about the
sun as the destination planet. (a) For a flight from earth to Mars, in
what direction must the rockets be fired at the earth and at Mars: in
the direction of motion, or opposite the direction of motion? What
about for a flight from Mars to the earth? (b) How long does a one-
way trip from the the earth to Mars take, between the firings of the
rockets? (c) To reach Mars from the…
Chapter 7 Solutions
The Physical Universe
Ch. 7 - Prob. 1MCCh. 7 - Prob. 2MCCh. 7 - Prob. 3MCCh. 7 - Prob. 4MCCh. 7 - Prob. 5MCCh. 7 - Prob. 6MCCh. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - Prob. 9MCCh. 7 - Six flutes playing together produce a 60-dB sound....
Ch. 7 - Prob. 11MCCh. 7 - Prob. 12MCCh. 7 - Maxwell based his theory of electromagnetic (em)...Ch. 7 - In a vacuum the speed of an em wave a. depends...Ch. 7 - Prob. 15MCCh. 7 - Prob. 16MCCh. 7 - Prob. 17MCCh. 7 - Light waves a. require air or another gas to...Ch. 7 - Prob. 19MCCh. 7 - The ionosphere is a region of ionized gas in the...Ch. 7 - Prob. 21MCCh. 7 - Prob. 22MCCh. 7 - Prob. 23MCCh. 7 - Prob. 24MCCh. 7 - Prob. 25MCCh. 7 - Prob. 26MCCh. 7 - Prob. 27MCCh. 7 - Prob. 28MCCh. 7 - Prob. 29MCCh. 7 - Prob. 30MCCh. 7 - Prob. 31MCCh. 7 - Prob. 32MCCh. 7 - Prob. 33MCCh. 7 - Thin films of oil and soapy water owe their...Ch. 7 - The sky is blue because a. air molecules are blue...Ch. 7 - Diffraction refers to a. the splitting of a beam...Ch. 7 - The useful magnification of a telescope is limited...Ch. 7 - Prob. 38MCCh. 7 - The speed of sound waves having a frequency of 256...Ch. 7 - The wavelength of sound waves having a frequency...Ch. 7 - Prob. 41MCCh. 7 - Prob. 42MCCh. 7 - Prob. 43MCCh. 7 - Prob. 44MCCh. 7 - Prob. 45MCCh. 7 - (a) Distinguish between longitudinal and...Ch. 7 - Prob. 2ECh. 7 - Water waves whose crests are 6 m apart reach the...Ch. 7 - Water waves are approaching a lighthouse at a rate...Ch. 7 - At one end of a ripple tank 90 cm across, a 6-Hz...Ch. 7 - A 1.2-MHz ultrasonic beam is used to scan body...Ch. 7 - Why does sound travel fastest in solids and...Ch. 7 - The speed of sound in a gas depends upon the...Ch. 7 - Even if astronauts on the moons surface did not...Ch. 7 - What eventually becomes of the energy of sound...Ch. 7 - A person is watching as spikes are being driven to...Ch. 7 - Prob. 12ECh. 7 - Find the frequency of sound waves in air whose...Ch. 7 - Prob. 14ECh. 7 - Prob. 15ECh. 7 - A violin string vibrates 1044 times per second....Ch. 7 - Prob. 17ECh. 7 - A double star consists of two nearby stars that...Ch. 7 - The characteristic wavelengths of light emitted by...Ch. 7 - Why are light waves able to travel through a...Ch. 7 - How could you show that light carries energy?Ch. 7 - Prob. 22ECh. 7 - Prob. 23ECh. 7 - Which of the following waves cannot be polarized:...Ch. 7 - Prob. 25ECh. 7 - Prob. 26ECh. 7 - Visible light of which color has the lowest...Ch. 7 - A radar signal took 2.7 s to go to the moon and...Ch. 7 - An opera performance is being broadcast by radio....Ch. 7 - Prob. 30ECh. 7 - A nanosecond is 109 s. (a) What is the frequency...Ch. 7 - A radar sends out 0.05-s pulses of microwaves...Ch. 7 - Prob. 33ECh. 7 - Prob. 34ECh. 7 - Prob. 35ECh. 7 - Prob. 36ECh. 7 - Can the index of refraction of a substance be less...Ch. 7 - Prob. 38ECh. 7 - When a fish looks up through the water surface at...Ch. 7 - A flashlight at the bottom of a swimming pool...Ch. 7 - Prob. 41ECh. 7 - The olive in a cocktail (n = 1.35) seems to be 30...Ch. 7 - Prob. 43ECh. 7 - Prob. 44ECh. 7 - What is the difference between a real image and a...Ch. 7 - A coin is placed at a focal point of a converging...Ch. 7 - Prob. 47ECh. 7 - Prob. 48ECh. 7 - Prob. 49ECh. 7 - Prob. 50ECh. 7 - Prob. 51ECh. 7 - Prob. 52ECh. 7 - Prob. 53ECh. 7 - The candle of Exercise 53 is 15 cm from the lens....Ch. 7 - Prob. 55ECh. 7 - Prob. 56ECh. 7 - Prob. 57ECh. 7 - Prob. 58ECh. 7 - (a) What is the name of the defect of vision in...Ch. 7 - Prob. 60ECh. 7 - When white light is dispersed by a glass prism,...Ch. 7 - Prob. 62ECh. 7 - Prob. 63ECh. 7 - If the earth had no atmosphere, what would the...Ch. 7 - Prob. 65ECh. 7 - Prob. 66ECh. 7 - Prob. 67ECh. 7 - Prob. 68ECh. 7 - Radio waves are able to diffract readily around...Ch. 7 - A radar operating at a wavelength of 3 cm is to...Ch. 7 - Prob. 71ECh. 7 - At night the pupils of a certain womans eyes are 8...
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