PHYSICS:PRINCIPLES W/ APPLICATIONS
7th Edition
ISBN: 2818440037979
Author: GIANCOLI
Publisher: PEARSON
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Chapter 7, Problem 27Q
To determine
Why the internal force of an engine can accelerate a car.
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Certain types of particle detectors can be used to reconstruct the tracks left by unstable, fast-moving sub-atomic particles. Assume
that a track with a length of L=2.97 mm in the laboratory frame of reference has been observed. Further assume that you
determined from other detector data that the particle moved at a speed of L=0.910 ⚫ c, also in the laboratory frame of reference. c
denotes the speed of light in vacuum. What proper lifetime would you determine for this particle from the data given?
T= 4.0
S
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While cruising down University Boulevard you are stopped by a cop who states that you ran a red traffic light. Because you don't
want to pay the stiff fine, you are attempting a physics defense. You claim that due to the relativistic Doppler effect, the red color of
the light λ=616 nm appeared green '=531 nm to you. The cop makes a quick calculation of his own and rejects your defense.
How fast, in terms of your speed u divided by the speed of light in vacuum c, would you have to drive to justify your claim? Note
that the speed u is taken to be a positive quantity.
U 4.0
C
Chapter 7 Solutions
PHYSICS:PRINCIPLES W/ APPLICATIONS
Ch. 7 - A railroad car loaded with rocks coasts on a level...Ch. 7 - 2. Which answer would you choose if the rocks fall...Ch. 7 - Prob. 1QCh. 7 - Prob. 2QCh. 7 - 3. When a person jumps from a tree to the ground,...Ch. 7 - Prob. 4QCh. 7 - Prob. 5QCh. 7 - Prob. 6QCh. 7 - According to Eq. 7-4, the longer the impact time...Ch. 7 - If a falling ball were to make a perfectly elastic...
Ch. 7 - A boy stands on the back of a rowboat and dives...Ch. 7 - It is said that in ancient times a rich man with a...Ch. 7 - The speed of a tennis ball on the return of a...Ch. 7 - Is it possible for an object to receive a larger...Ch. 7 - In a collision between two cars, which would you...Ch. 7 - A very elastic “superball” is dropped from a...Ch. 7 - Prob. 15QCh. 7 - Prob. 16QCh. 7 - Prob. 17QCh. 7 - Prob. 18QCh. 7 - Prob. 19QCh. 7 - Prob. 20QCh. 7 - Prob. 21QCh. 7 - Prob. 22QCh. 7 - Prob. 23QCh. 7 - Bob and Jim decide to play tug-of-war on a...Ch. 7 - 25. In one type of nuclear radioactive decay, an...Ch. 7 - Prob. 26QCh. 7 - Prob. 27QCh. 7 - Prob. 28QCh. 7 - Prob. 1MCQCh. 7 - Prob. 2MCQCh. 7 - Prob. 3MCQCh. 7 - Prob. 4MCQCh. 7 - Prob. 5MCQCh. 7 - Prob. 6MCQCh. 7 - Prob. 7MCQCh. 7 - Prob. 8MCQCh. 7 - Prob. 9MCQCh. 7 - 10. Choose the best answer in the previous...Ch. 7 - 11. A railroad tank car contains milk and rolls at...Ch. 7 - Prob. 12MCQCh. 7 - 1. (I) What is the magnitude of the momentum of a...Ch. 7 - A constant friction force of 25 N acts on a 65-kg...Ch. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Calculate the force exerted on a rocket when the...Ch. 7 - A 7700-kg boxcar traveling 14 m/s strikes a second...Ch. 7 - A child in a boat throws a 5.30-kg package out...Ch. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - An object at rest is suddenly broken apart into...Ch. 7 - A22- bullet traveling 240 m/s penetrates a 2.0-kg...Ch. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - A golf ball of mass 0.045 kg is hit off the lee at...Ch. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - With what impulse does a 0.50-kg newspaper have to...Ch. 7 - Prob. 23PCh. 7 - (a) Calculate the impulse experienced when a 55-kg...Ch. 7 - A ball of mass 0.440 kg moving east (+ x...Ch. 7 - 26. (II) A 0.450-kg hockey puck, moving east with...Ch. 7 - Prob. 27PCh. 7 - Two billiard balls of equal mass undergo a...Ch. 7 - 29. (II) A 0.280-kg croquet ball makes an elastic...Ch. 7 - Prob. 30PCh. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - Prob. 36PCh. 7 - Prob. 37PCh. 7 - Prob. 38PCh. 7 - Car A hits car B (initially at rest and of equal...Ch. 7 - Prob. 40PCh. 7 - Prob. 41PCh. 7 - Prob. 42PCh. 7 - Prob. 43PCh. 7 - Prob. 44PCh. 7 - Prob. 45PCh. 7 - Prob. 46PCh. 7 - An atomic nucleus of mass m traveling with speed v...Ch. 7 - Prob. 48PCh. 7 - Prob. 49PCh. 7 - Find the center of mass of the three-mass system...Ch. 7 - Prob. 51PCh. 7 - Prob. 52PCh. 7 - Prob. 53PCh. 7 - Prob. 54PCh. 7 - Prob. 55PCh. 7 - Prob. 56PCh. 7 - Prob. 57PCh. 7 - Prob. 58PCh. 7 - Prob. 59PCh. 7 - Prob. 60PCh. 7 - Prob. 61PCh. 7 - Prob. 62PCh. 7 - Prob. 63PCh. 7 - Prob. 64PCh. 7 - Prob. 65PCh. 7 - Prob. 66PCh. 7 - Prob. 67GPCh. 7 - Prob. 68GPCh. 7 - Prob. 69GPCh. 7 - Prob. 70GPCh. 7 - Prob. 71GPCh. 7 - Prob. 72GPCh. 7 - Prob. 73GPCh. 7 - Prob. 74GPCh. 7 - Prob. 75GPCh. 7 - Prob. 76GPCh. 7 - Prob. 77GPCh. 7 - Prob. 78GPCh. 7 - Prob. 79GPCh. 7 - Prob. 80GPCh. 7 - Astronomers estimate that a 2.0-km-diameter...Ch. 7 - Prob. 82GPCh. 7 - Prob. 83GPCh. 7 - Prob. 84GPCh. 7 - Prob. 85GPCh. 7 - 86. A novice pool player is faced with the corner...
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- 220 V is supplied to 800 primary turns of an autotransformer. What will the outputvoltage be across 200 secondary turns? 2. A filament transformer has a turns ratio of 1:20. What current must be supplied to theprimary windings if 5 A is required by the filament? 3. The filament transformer in the previous question is supplied with 150 V to theprimary side. What is the secondary voltage? 4. 440 V is supplied to 1000 primary turns of an autotransformer. If the desired outputvoltage is 100 V how many secondary turns must be tapped?arrow_forward220 volts is supplied across 1200 winding of the primary coil of the autotransformer.If 1650 windings are tapped, what voltage will be supplied to the primary coil of thehigh-voltage transformer?2. A kVp meter reads 86 kVp and the turns ratio of the high-voltage step-up transformeris 1200. What is the true voltage across the meter?3. The supply voltage from the autotransformer to the filament transformer is 60 volts. If theturns ratio of the filament transformer is 1/12, what is the filament voltage?4. If the current in the primary side of the filament transformer in question 3 were 0.5 A,what would be the filament current?5. The supply to a high-voltage step-up transformer with a turns ratio of 550 is 190 volts.What is the voltage across the x-ray tube?arrow_forward220 V is supplied to 800 primary turns of an autotransformer. What will the outputvoltage be across 200 secondary turns? 2. A filament transformer has a turns ratio of 1:20. What current must be supplied to theprimary windings if 5 A is required by the filament? 3. The filament transformer in the previous question is supplied with 150 V to theprimary side. What is the secondary voltage? 4. 440 V is supplied to 1000 primary turns of an autotransformer. If the desired outputvoltage is 100 V how many secondary turns must be tapped?arrow_forward
- Assume ax(u) is constant, then show thatarrow_forwardOne strain of bacteria was found to have a membrane potential of -120 mVmV at a pHpH of 7.5. A bacterium can be modeled as a 1.5-μmμm-diameter sphere. How many positive ions are needed on the exterior surface to establish this membrane potential? (There are an equal number of negative ions on the interior surface.) Assume that the membrane properties are the same as those of mammalian cells.arrow_forwardQ: Draw the fabrication layers of a transistor with metal and semiconductor MS junction (Schottkyj unction).arrow_forward
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