Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Chapter 14, Problem 38PCE
To determine
The maximum possible distance between the bird watcher and the bird.
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••63 SSM www In the circuit of
Fig. 27-65, 8 = 1.2 kV, C = 6.5 µF,
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what are (a) current i̟ in resistor 1,
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Figure 27-65 Problem 63.
Thor flies by spinning his hammer really fast from a leather strap at the end of the handle, letting go, then grabbing it and having it pull him. If Thor wants to reach escape velocity (velocity needed to leave Earth’s atmosphere), he will need the linear velocity of the center of mass of the hammer to be 11,200 m/s. Thor's escape velocity is 33532.9 rad/s, the angular velocity is 8055.5 rad/s^2. While the hammer is spinning at its maximum speed what impossibly large tension does the leather strap, which the hammer is spinning by, exert when the hammer is at its lowest point? the hammer has a total mass of 20.0kg.
If the room’s radius is 16.2 m, at what minimum linear speed does Quicksilver need to run to stay on the walls without sliding down? Assume the coefficient of friction between Quicksilver and the wall is 0.236.
Chapter 14 Solutions
Physics (5th Edition)
Ch. 14.1 - Rank the following systems in order of increasing...Ch. 14.2 - Suppose the tension in a string is doubled, its...Ch. 14.3 - A particular harmonic wave is described by the...Ch. 14.4 - Which is faster: wave 1 in medium 1 with a...Ch. 14.5 - Enhance Your Understanding (Answers given at the...Ch. 14.6 - Observer 1 approaches a stationary 1000-Hz source...Ch. 14.7 - Prob. 7EYUCh. 14.8 - When a string oscillates with the standing wave...Ch. 14.9 - Rank the following systems in order of increasing...Ch. 14 - A long nail has been driven halfway into the side...
Ch. 14 - What type of wave is exhibited by amber waves of...Ch. 14 - In a classic TV commercial, a group of cats feed...Ch. 14 - Describe how the sound of a symphony played by an...Ch. 14 - A radar gun is often used to measure the speed of...Ch. 14 - When you drive a nail into a piece of wood, you...Ch. 14 - Explain the function of the sliding part of a...Ch. 14 - On a guitar, some strings are single wires, others...Ch. 14 - Prob. 9CQCh. 14 - A wave travels along a stretched horizontal rope....Ch. 14 - To determine: The speed of the waves Answer: The...Ch. 14 - The speed of surface waves in water decreases as...Ch. 14 - Prob. 4PCECh. 14 - A stationary boat bobs up and down with a period...Ch. 14 - Predict/Calculate A 4.5-Hz wave with an amplitude...Ch. 14 - Deepwater Waves The speed of a deepwater wave with...Ch. 14 - Prob. 8PCECh. 14 - Consider a wave on a string with constant tension....Ch. 14 - Suppose you would like to double the speed of a...Ch. 14 - Predict/Explain Two strings are made of the same...Ch. 14 - Predict/Explain Two strings are made of the same...Ch. 14 - Prob. 13PCECh. 14 - A brother and sister try to communicate with a...Ch. 14 - Predict/Calculate (a) Suppose the tension is...Ch. 14 - Prob. 16PCECh. 14 - A 4.5-m-long rope of mass 1.8 kg hangs from a...Ch. 14 - Two steel guitar strings have the same length....Ch. 14 - Use dimensional analysis to show how the speed v...Ch. 14 - Prob. 20PCECh. 14 - Write an expression for a transverse harmonic wave...Ch. 14 - The vertical displacement of a wave on a string is...Ch. 14 - As it travels through a crystal, a light wave is...Ch. 14 - Predict/Calculate A wave on a string is described...Ch. 14 - Consider a harmonic wave with the following wave...Ch. 14 - Predict/Calculate Four waves are described by the...Ch. 14 - To determine: The distance of the cliff form the...Ch. 14 - BIO Dolphin Ultrasound Dolphins of the open ocean...Ch. 14 - Prob. 29PCECh. 14 - Prob. 30PCECh. 14 - Predict/Calculate A sound wave in air has a...Ch. 14 - Prob. 32PCECh. 14 - A rock is thrown downward into a well that is 7.62...Ch. 14 - If the distance to a point source of sound is...Ch. 14 - The intensity level of sound in a truck is 88 dB....Ch. 14 - Prob. 36PCECh. 14 - Sound 1 has an intensity of 48.0 W/m2. Sound 2 has...Ch. 14 - Prob. 38PCECh. 14 - Residents of Hawaii are warned of the approach of...Ch. 14 - In a pig-calling contest, a caller produces a...Ch. 14 - Prob. 41PCECh. 14 - BIO The Human Eardrum The radius of a typical...Ch. 14 - Predict/Explain A horn produces sound with...Ch. 14 - You are heading toward an island in your speedboat...Ch. 14 - When the bell in a clock tower rings with a sound...Ch. 14 - A car approaches a train station with a speed of...Ch. 14 - BIO A bat moving with a speed of 3.25 m/s and...Ch. 14 - A motorcycle and a police car are moving toward...Ch. 14 - Hearing the siren of an approaching fire truck,...Ch. 14 - Prob. 50PCECh. 14 - Predict/Calculate Two bicycles approach one...Ch. 14 - A train on one track moves in the same direction...Ch. 14 - Two cars traveling with the same speed move...Ch. 14 - The Bullet Train The Shinkansen, the Japanese...Ch. 14 - Prob. 55PCECh. 14 - Prob. 56PCECh. 14 - A pair of in-phase stereo speakers is placed side...Ch. 14 - Predict/Calculate Two violinists, one directly...Ch. 14 - Two loudspeakers are placed at either end of a...Ch. 14 - Prob. 60PCECh. 14 - Prob. 61PCECh. 14 - Prob. 62PCECh. 14 - An organ pipe that is open at both ends is 3.5 m...Ch. 14 - A string 2.5 m long with a mass of 3.6 g is...Ch. 14 - Prob. 65PCECh. 14 - The fundamental wavelength for standing sound...Ch. 14 - A string is tied down at both ends. Some of the...Ch. 14 - Prob. 68PCECh. 14 - A guitar string 66 cm long vibrates with a...Ch. 14 - Predict/Calculate A guitar string has a mass per...Ch. 14 - Prob. 71PCECh. 14 - The organ pipe in Figure 14-49 is 2.75 m long. (a)...Ch. 14 - The frequency of the standing wave shown in Figure...Ch. 14 - An organ pipe open at both ends has a harmonic...Ch. 14 - When guitar strings A and B are plucked at the...Ch. 14 - Prob. 76PCECh. 14 - You have three tuning forks with frequencies of...Ch. 14 - Tuning a Piano To tune middle C on a piano, a...Ch. 14 - Two musicians are comparing their clarinets. The...Ch. 14 - Predict/Calculate Two strings that are fixed at...Ch. 14 - Identical cellos are being tested. One is...Ch. 14 - A friend in another city tells you that she has...Ch. 14 - Prob. 83GPCh. 14 - The fundamental of an organ pipe that is closed at...Ch. 14 - The Loudest Animal The loudest sound produced by a...Ch. 14 - Hearing a Good Hit Physicist Robert Adair, once...Ch. 14 - Prob. 87GPCh. 14 - Playing Harmonics When a 63-cm-long guitar string...Ch. 14 - BIO Measuring Hearing Loss To determine the amount...Ch. 14 - BIO Hearing a Pin Drop The ability to hear a pin...Ch. 14 - A cannon 105 m away from you shoots a cannonball...Ch. 14 - A machine shop has 120 equally noisy machines that...Ch. 14 - Predict/Calculate A bottle has a standing wave...Ch. 14 - Speed of a Tsunami Tsunamis can have wavelengths...Ch. 14 - Two trains with 124-Hz horns approach one another....Ch. 14 - Predict/Calculate Jim is speeding toward James...Ch. 14 - Two ships in a heavy fog are blowing their horns,...Ch. 14 - BIO Cracking Your Knuckles When you crack a...Ch. 14 - A steel guitar string has a tension F, length L,...Ch. 14 - A Slinky has a mass of 0.28 kg and negligible...Ch. 14 - BIO Predict/Calculate OSHA Noise Standards OSHA,...Ch. 14 - An organ pipe 3.4 m long is open at one end and...Ch. 14 - Two identical strings with the same tension...Ch. 14 - BIO The Love Song of the Midshipman Fish When the...Ch. 14 - Prob. 105GPCh. 14 - Beats and Standing Waves In Problem 59, suppose...Ch. 14 - Prob. 107PPCh. 14 - Prob. 108PPCh. 14 - Prob. 109PPCh. 14 - Prob. 110PPCh. 14 - Prob. 111PPCh. 14 - Referring to Example 14-11 Suppose the train is...Ch. 14 - Prob. 113PPCh. 14 - Prob. 114PP
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- In the comics Thor flies by spinning his hammer really fast from a leather strap at the end of the handle, letting go, then grabbing it and having it pull him. If Thor wants to reach escape velocity (velocity needed to leave Earth’s atmosphere), he will need the linear velocity of the center of mass of the hammer to be 11,200 m/s. A) If the distance from the end of the strap to the center of the hammer is 0.334 m, what angular velocity does Thor need to spin his hammer at to reach escape velocity? b) If the hammer starts from rest what angular acceleration does Thor need to reach that angular velocity in 4.16 s? c) While the hammer is spinning at its maximum speed what impossibly large tension does the leather strap, which the hammer is spinning by, exert when the hammer is at its lowest point? The hammer has a total mass of 20.0kg.arrow_forwardThe car goes from driving straight to spinning at 10.6 rev/min in 0.257 s with a radius of 12.2 m. The angular accleration is 4.28 rad/s^2. During this flip Barbie stays firmly seated in the car’s seat. Barbie has a mass of 58.0 kg, what is her normal force at the top of the loop?arrow_forwardConsider a hoop of radius R and mass M rolling without slipping. Which form of kinetic energy is larger, translational or rotational?arrow_forward
- A roller-coaster vehicle has a mass of 571 kg when fully loaded with passengers (see figure). A) If the vehicle has a speed of 22.5 m/s at point A, what is the force of the track on the vehicle at this point? B) What is the maximum speed the vehicle can have at point B, in order for gravity to hold it on the track?arrow_forwardThis one wheeled motorcycle’s wheel maximum angular velocity was about 430 rev/min. Given that it’s radius was 0.920 m, what was the largest linear velocity of the monowheel?The monowheel could not accelerate fast or the rider would start spinning inside (this is called "gerbiling"). The maximum angular acceleration was 10.9 rad/s2. How long, in seconds, would it take it to hit maximum speed from rest?arrow_forwardIf points a and b are connected by a wire with negligible resistance, find the magnitude of the current in the 12.0 V battery.arrow_forward
- Consider the two pucks shown in the figure. As they move towards each other, the momentum of each puck is equal in magnitude and opposite in direction. Given that v kinetic energy of the system is converted to internal energy? 30.0° 130.0 = green 11.0 m/s, and m blue is 25.0% greater than m 'green' what are the final speeds of each puck (in m/s), if 1½-½ t thearrow_forwardConsider the blocks on the curved ramp as seen in the figure. The blocks have masses m₁ = 2.00 kg and m₂ = 3.60 kg, and are initially at rest. The blocks are allowed to slide down the ramp and they then undergo a head-on, elastic collision on the flat portion. Determine the heights (in m) to which m₁ and m2 rise on the curved portion of the ramp after the collision. Assume the ramp is frictionless, and h 4.40 m. m2 = m₁ m hm1 hm2 m iarrow_forwardA 3.04-kg steel ball strikes a massive wall at 10.0 m/s at an angle of 0 = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.234 s, what is the average force exerted by the wall on the ball? magnitude direction ---Select--- ✓ N xarrow_forward
- You are in the early stages of an internship at NASA. Your supervisor has asked you to analyze emergency procedures for extravehicular activity (EVA), when the astronauts leave the International Space Station (ISS) to do repairs to its exterior or perform other tasks. In particular, the scenario you are studying is a failure of the manned-maneuvering unit (MMU), which is a nitrogen-propelled backpack that attaches to the astronaut's primary life support system (PLSS). In this scenario, the astronaut is floating directly away from the ISS and cannot use the failed MMU to get back. Therefore, the emergency plan is to take off the MMU and throw it in a direction directly away from the ISS, an action that will hopefully cause the astronaut to reverse direction and float back to the station. You have the following mass data provided to you: astronaut: 78.1 kg, spacesuit: 36.8 kg, MMU: 115 kg, PLSS: 145 kg. Based on tests performed by astronauts floating "weightless" inside the ISS, the most…arrow_forwardThree carts of masses m₁ = 4.50 kg, m₂ = 10.50 kg, and m3 = 3.00 kg move on a frictionless, horizontal track with speeds of V1 v1 13 m 12 mq m3 (a) Find the final velocity of the train of three carts. magnitude direction m/s |---Select--- ☑ (b) Does your answer require that all the carts collide and stick together at the same moment? ○ Yes Ο Νο = 6.00 m/s to the right, v₂ = 3.00 m/s to the right, and V3 = 6.00 m/s to the left, as shown below. Velcro couplers make the carts stick together after colliding.arrow_forwardA girl launches a toy rocket from the ground. The engine experiences an average thrust of 5.26 N. The mass of the engine plus fuel before liftoff is 25.4 g, which includes fuel mass of 12.7 g. The engine fires for a total of 1.90 s. (Assume all the fuel is consumed.) (a) Calculate the average exhaust speed of the engine (in m/s). m/s (b) This engine is positioned in a rocket body of mass 70.0 g. What is the magnitude of the final velocity of the rocket (in m/s) if it were to be fired from rest in outer space with the same amount of fuel? Assume the fuel burns at a constant rate. m/sarrow_forward
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