Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Chapter 10, Problem 115DQ
Why is the Moon described as a “silent planet”?
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A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction between the ladder and the floor is the same as that between the ladder and the wall. If this
coefficient of static friction is μs : 0.535, determine the smallest angle the ladder can make with the floor without slipping.
°
=
A 14.0 m uniform ladder weighing 480 N rests against a frictionless wall. The ladder makes a 55.0°-angle with the horizontal.
(a) Find the horizontal and vertical forces (in N) the ground exerts on the base of the ladder when an 850-N firefighter has climbed 4.10 m along the ladder from the bottom.
horizontal force
magnitude
342.
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direction
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✓
vertical force
1330
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magnitude
direction
(b) If the ladder is just on the verge of slipping when the firefighter is 9.10 m from the bottom, what is the coefficient of static friction between ladder and ground?
0.26
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ma
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magnitude of the force in N.)…
John is pushing his daughter Rachel in a wheelbarrow when it is stopped by a brick 8.00 cm high (see the figure below). The handles make an angle of 0 = 17.5° with the ground. Due to the weight of
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Chapter 10 Solutions
Conceptual Physical Science (6th Edition)
Ch. 10 - What is the source of all waves?Ch. 10 - Distinguish between these parts of a wave: period,...Ch. 10 - How are frequency and period related to each...Ch. 10 - In one word, what is it that moves from source to...Ch. 10 - Does the medium in which a wave travels move with...Ch. 10 - What is the relationship among frequency,...Ch. 10 - In what direction are the vibrations in a...Ch. 10 - In what direction do compressed regions and...Ch. 10 - Does sound travel faster in warm air or in cold...Ch. 10 - How does the speed of sound in water compare with...
Ch. 10 - What is the law of reflection for sound?Ch. 10 - What is a reverberation?Ch. 10 - Relate wave speed and bending to the phenomenon of...Ch. 10 - Does sound tend to bend upward or downward when it...Ch. 10 - How do dolphins perceive their environment in dark...Ch. 10 - Why does a struck tuning fork sound louder when...Ch. 10 - Distinguish between forced vibrations and...Ch. 10 - When you listen to a radio, why do you hear only...Ch. 10 - Why do troops break step when crossing a bridge?Ch. 10 - What kinds of waves exhibit interference?Ch. 10 - Distinguish between constructive interference and...Ch. 10 - What does it mean to say that one wave is out of...Ch. 10 - What physical phenomenon underlies beats?Ch. 10 - What is a node? What is an antinode?Ch. 10 - In the Doppler effect, does frequency change? Does...Ch. 10 - Can the Doppler effect be observed with...Ch. 10 - How do the speed of a wave source and the speed of...Ch. 10 - How does the V shape of a bow wave depend on the...Ch. 10 - True or false: A sonic boom occurs only when an...Ch. 10 - Distinguish between a musical sound and noise.Ch. 10 - A pendulum swings to and fro every 3 seconds. Show...Ch. 10 - Another pendulum swings to and fro at a regular...Ch. 10 - A wave 3 m long oscillates 1.5 times each, second....Ch. 10 - Show that a certain wave with a 1.2-m wavelength...Ch. 10 - A tuning fork produces a sound with a frequency of...Ch. 10 - A nurse approaches his patient and counts 72...Ch. 10 - A weight suspended from a spring is seen to bob up...Ch. 10 - We know that speed v = distance/time. Show that...Ch. 10 - A skipper on a boat notices wave crests passing...Ch. 10 - A mosquito flaps its wings at the rate of 600...Ch. 10 - The highest-frequency sound humans can hear is...Ch. 10 - Microwave ovens typically cook food using...Ch. 10 - For years, marine scientists were mystified by...Ch. 10 - An oceanic depth-sounding vessel surveys the ocean...Ch. 10 - A bat flying in a cave emits a sound and receives...Ch. 10 - Susie hammers on a block of wood 85 m from a large...Ch. 10 - Imagine an old hermit living in a cave in the...Ch. 10 - On a piano keyboard, you strike middle C, of...Ch. 10 - (a) Say you were foolish enough to play your...Ch. 10 - A beat frequency is equal to the difference...Ch. 10 - As shown in the drawing, the half-angle of the...Ch. 10 - All the waves shown have the same speed b: the...Ch. 10 - Four different pairs of transverse wave pulses...Ch. 10 - Rank, from highest to lowest, the pitch heard when...Ch. 10 - The following three shock waves are produced by...Ch. 10 - Rank, from greatest to least, the speed of sound...Ch. 10 - Rank the beat frequencies, from highest to lowest,...Ch. 10 - Phil Physiker blows across the mouths of identical...Ch. 10 - A student that youre tutoring says that the terms...Ch. 10 - You dip your finger at a steady rate into a puddle...Ch. 10 - Red light has a longer wavelength than violet...Ch. 10 - When sound becomes louder, which wave...Ch. 10 - What two physics mistakes occur in a...Ch. 10 - How does the frequency of vibration of a small...Ch. 10 - A friend says that wave speed is equal to the...Ch. 10 - What kind of motion should you impart to the...Ch. 10 - What kind of motion should you impart to a...Ch. 10 - A cat can hear sound frequencies up to 70,000 Hz....Ch. 10 - The sounds emitted by bats are extremely intense....Ch. 10 - Why do you not hear the sound of a distant...Ch. 10 - If the Moon blew up, why would we not hear the...Ch. 10 - Why would it be futile to attempt to detect sounds...Ch. 10 - A pair of sound waves of different wavelengths...Ch. 10 - In Olympic competition, the sound of the starters...Ch. 10 - A friend says that sound travels faster in warm...Ch. 10 - Why does your voice sound fuller when you are...Ch. 10 - A bat chirps as it flies toward a wall. Is the...Ch. 10 - A friend says that refraction of any kind of wave...Ch. 10 - Why are marchers following a hand at the end of a...Ch. 10 - What is the danger posed by people in the balcony...Ch. 10 - Why is the sound of a harp soft compared with the...Ch. 10 - What physics principle does Manuel use when he...Ch. 10 - How can a certain note sung by a singer cause a...Ch. 10 - A nylon guitar string vibrates in a standing-wave...Ch. 10 - Two bunnies hop at slightly different rates but...Ch. 10 - Suppose a piano tuner hears three beats per second...Ch. 10 - When the frequency of sound is doubled, what...Ch. 10 - A railroad locomotive is at rest with its whistle...Ch. 10 - When you blow your horn while driving toward a...Ch. 10 - How does the Doppler effect aid police in...Ch. 10 - Astronomers find that light emitted by a...Ch. 10 - Would it be correct to say that the Doppler effect...Ch. 10 - A swimming cluck produces a bow wave attached to...Ch. 10 - Does the conical angle of a shock wave become...Ch. 10 - If the sound of an airplane does not originate in...Ch. 10 - Why is it that a subsonic aircraft, no matter how...Ch. 10 - Distinguish between noise and music in terms of...Ch. 10 - If the fundamental frequency of a guitar string is...Ch. 10 - How many nodes, excluding end points, are in a...Ch. 10 - Which of the two musical notes displayed...Ch. 10 - What characteristic of sound distinguishes a piano...Ch. 10 - What does it mean to say that a radio station is...Ch. 10 - At the instant that a high-pressure region is...Ch. 10 - If a bell is ringing inside a bell jar, we can no...Ch. 10 - If the speed of sound depended on its frequency,...Ch. 10 - Why is the Moon described as a silent planet?Ch. 10 - Discuss why sound travels faster in moist air....Ch. 10 - Why is an echo weaker than the original sound?...Ch. 10 - One rule of thumb for estimating the distance in...Ch. 10 - If a single disturbance at an unknown distance...Ch. 10 - As you pour water into a glass, you repeatedly tap...Ch. 10 - Physics instructor Peter Hopkinson delights in...Ch. 10 - What physics principle is used in radar guns to...Ch. 10 - A special device can transmit sound that is out of...Ch. 10 - Two sound waves of the same frequency can...Ch. 10 - Discuss whether or not a sonic boom occurs at the...Ch. 10 - When we consider the time it takes for a pendulum...Ch. 10 - The vibrations along a transverse wave move (a)...Ch. 10 - A common example of a longitudinal wave is (a)...Ch. 10 - The speed of sound varies with (a) amplitude. 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