College Physics
7th Edition
ISBN: 9780321601834
Author: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
Publisher: Addison-Wesley
expand_more
expand_more
format_list_bulleted
Question
Chapter 6, Problem 15CQ
To determine
The reason why the auto bumpers are made of materials that crumple or collapse.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Portfolio Problem 3. A ball is thrown vertically upwards with a speed vo
from the floor of a room of height h. It hits the ceiling and then returns to the
floor, from which it rebounds, managing just to hit the ceiling a second time.
Assume that the coefficient of restitution between the ball and the floor, e, is
equal to that between the ball and the ceiling. Compute e.
Portfolio Problem 4. Consider two identical springs, each with natural length
and spring constant k, attached to a horizontal frame at distance 2l apart. Their
free ends are attached to the same particle of mass m, which is hanging under
gravity. Let z denote the vertical displacement of the particle from the hori-
zontal frame, so that z < 0 when the particle is below the frame, as shown in
the figure. The particle has zero horizontal velocity, so that the motion is one
dimensional along z.
000000
0
eeeeee
(a) Show that the total force acting on the particle is
X
F-mg k-2kz 1
(1.
l
k.
(b) Find the potential energy U(x, y, z) of the system such that U
x = : 0.
= O when
(c) The particle is pulled down until the springs are each of length 3l, and then
released. Find the velocity of the particle when it crosses z = 0.
In the figure below, a semicircular conductor of radius R = 0.260 m is rotated about the axis AC at a constant rate of 130 rev/min. A uniform magnetic field of magnitude 1.22 T fills the entire region below the axis and is directed out of the page.
R
Pout
(a) Calculate the maximum value of the emf induced between the ends of the conductor.
1.77
v
(b) What is the value of the average induced emf for each complete rotation?
0
v
(c) How would your answers to parts (a) and (b) change if the magnetic field were allowed to extend a distance R above the axis of rotation? (Select all that apply.)
The value in part (a) would increase.
The value in part (a) would remain the same.
The value in part (a) would decrease.
The value in part (b) would increase.
The value in part (b) would remain the same.
The value in part (b) would decrease.
×
(d) Sketch the emf versus time when the field is as drawn in the figure. Choose File No file chosen
This answer has not been graded yet.
(e) Sketch the emf…
Chapter 6 Solutions
College Physics
Ch. 6 - Prob. 1MCQCh. 6 - Prob. 2MCQCh. 6 - Prob. 3MCQCh. 6 - Prob. 4MCQCh. 6 - Prob. 5MCQCh. 6 - Prob. 6MCQCh. 6 - Prob. 7MCQCh. 6 - Prob. 8MCQCh. 6 - Prob. 9MCQCh. 6 - Prob. 10MCQ
Ch. 6 - Prob. 11MCQCh. 6 - Prob. 12MCQCh. 6 - Prob. 13MCQCh. 6 - Prob. 14MCQCh. 6 - Prob. 15MCQCh. 6 - Prob. 16MCQCh. 6 - In a football game, does a fast-running running...Ch. 6 - Prob. 2CQCh. 6 - Prob. 3CQCh. 6 - Prob. 4CQCh. 6 - Prob. 5CQCh. 6 - Prob. 6CQCh. 6 - Prob. 7CQCh. 6 - Prob. 8CQCh. 6 - Prob. 9CQCh. 6 - Prob. 10CQCh. 6 - Prob. 11CQCh. 6 - Prob. 12CQCh. 6 - Prob. 13CQCh. 6 - Prob. 14CQCh. 6 - Prob. 15CQCh. 6 - Prob. 16CQCh. 6 - Prob. 17CQCh. 6 - Prob. 18CQCh. 6 - Prob. 19CQCh. 6 - If a 60-kg woman is riding in a car traveling at...Ch. 6 - The linear momentum of a runner in a 100-m dash is...Ch. 6 - Find the magnitude of the linear momentum of (a) a...Ch. 6 - Prob. 4ECh. 6 - A 0.150-kg baseball traveling with a horizontal...Ch. 6 - A 15.0-g rubber bullet hits a wall with a speed of...Ch. 6 - Prob. 7ECh. 6 - How much momentum is acquired by a 75-kg sky-...Ch. 6 - Prob. 9ECh. 6 - Prob. 10ECh. 6 - Prob. 11ECh. 6 - Prob. 12ECh. 6 - A loaded tractor-trailer with a total mass of 5000...Ch. 6 - Prob. 14ECh. 6 - In football practice, two wide receivers run...Ch. 6 - A major league catcher catches a fastball moving...Ch. 6 - At a basketball game, a 120-lb cheerleader is...Ch. 6 - A ball of mass 200 g is released from rest at a...Ch. 6 - When tossed upward and hit horizontally by a...Ch. 6 - Prob. 20ECh. 6 - A pool player imparts an impulse of 3.2 N·s to a...Ch. 6 - Prob. 22ECh. 6 - Prob. 23ECh. 6 - Prob. 24ECh. 6 - Prob. 25ECh. 6 - Prob. 26ECh. 6 - A boy catches—with bare hands and his arms rigidly...Ch. 6 - A one-dimensional impulse force acts on a 3.0-kg...Ch. 6 - Prob. 29ECh. 6 - A 50-kg driver sits in her car waiting for the...Ch. 6 - An incoming 0.14-kg baseball has a speed of 45...Ch. 6 - At a shooting competition, a contestant fires and...Ch. 6 - If the billiard ball in Fig. 6.31 is in contact...Ch. 6 - A 15000-N automobile travels at a speed of 45 km/h...Ch. 6 - In a simulated head-on crash test, a car impacts a...Ch. 6 -
A baseball player pops a pitch straight up. The...Ch. 6 - Prob. 37ECh. 6 - In a pairs figure-skating competition, a 65-kg man...Ch. 6 - Prob. 39ECh. 6 - An object initially at rest explodes and splits...Ch. 6 - Prob. 41ECh. 6 - A cherry bomb explodes into three pieces of equal...Ch. 6 - Two ice skaters not paying attention collide in a...Ch. 6 - Prob. 44ECh. 6 - A 1200-kg car moving to the right with a speed of...Ch. 6 - A 10-g bullet moving horizontally at 400 m/s...Ch. 6 - An explosion of a 10.0-kg bomb releases only two...Ch. 6 - A 1600-kg (empty) truck rolls with a speed of 2.5...Ch. 6 - A new crowd control method utilizes “rubber”...Ch. 6 - For a movie scene, a 75-kg stuntman drops from a...Ch. 6 - A 90-kg astronaut is stranded in space at a point...Ch. 6 - Prob. 52ECh. 6 - A moving shuffleboard puck has a glancing...Ch. 6 - Prob. 54ECh. 6 - A ballistic pendulum is a device used to measure...Ch. 6 - Prob. 56ECh. 6 - A proton of mass m moving with a speed of 3.0 ×...Ch. 6 - A 4.0-kg ball with a velocity of 4.0 m/s in the...Ch. 6 - Prob. 59ECh. 6 - At a county fair, two children ram each other...Ch. 6 - In a high-speed chase, a policeman’s car bumps a...Ch. 6 - Fig. 6.36 shows a bird catching a fish. Assume...Ch. 6 - A 1.0-kg object moving at 10 m/s collides with a...Ch. 6 - In a pool game, a cue ball traveling at 0.75 m/s...Ch. 6 - Two balls approach each other as shown in Fig....Ch. 6 -
A car traveling east and a minivan traveling...Ch. 6 - Prob. 67ECh. 6 - Prob. 68ECh. 6 - Prob. 69ECh. 6 - In nuclear reactors, subatomic particles called...Ch. 6 - Prob. 71ECh. 6 - Pendulum 1 is made of a 1.50-m string with a small...Ch. 6 - Show that the fraction of kinetic energy lost in a...Ch. 6 - Prob. 74ECh. 6 - (a) Find the center of mass of the Earth–Moon...Ch. 6 - Find the center of mass of a system composed of...Ch. 6 - Rework Exercise 52, using the concept of the...Ch. 6 - A 3.0-kg rod of length 5.0 m has at opposite ends...Ch. 6 - Prob. 79ECh. 6 - Locate the center of mass of the system shown in...Ch. 6 - Prob. 81ECh. 6 - Prob. 82ECh. 6 - Three particles, each with a mass of 0.25 kg, are...Ch. 6 - Prob. 84ECh. 6 - You are traveling north and make a 90° right-hand...Ch. 6 - Prob. 86ECh. 6 - A young hockey player with a mass of 30.0 kg is...Ch. 6 - In a laboratory setup, two frictionless carts are...
Knowledge Booster
Similar questions
- Portfolio Problem 2. A particle of mass m slides in a straight line (say along i) on a surface, with initial position x ©0 and initial velocity Vo > 0 at t = 0. The = particle is subject to a constant force F = -mai, with a > 0. While sliding on the surface, the particle is also subject to a friction force v Ff = -m fo = −m fov, with fo > 0, i.e., the friction force has constant magnitude mfo and is always opposed to the motion. We also assume fo 0, and solve it to find v(t) and x(t). How long does it take for the particle to come to a stop? How far does it travel? (b) After coming to a stop, the particle starts sliding backwards with negative velocity. Write the equation of motion in this case, and solve it to find the time at which the particle returns to the original position, x = 0. Show that the final speed at x 0 is smaller than Vo. = Express all your answers in terms of a, fo and Vo.arrow_forward= Portfolio Problem 1. A particle of mass m is dropped (i.e., falls down with zero initial velocity) at time t 0 from height h. If the particle is subject to gravitational acceleration only, i.e., a = −gk, determine its speed as it hits the ground by solving explicitly the expressions for its velocity and position. Next, verify your result using dimensional analysis, assuming that the general relation is of the form v = khag³m, where k is a dimensionless constant.arrow_forwardReview Conceptual Example 2 before attempting this problem. Two slits are 0.158 mm apart. A mixture of red light (wavelength = 693 nm) and yellow-green light (wavelength = 567 nm) falls on the slits. A flat observation screen is located 2.42 m away. What is the distance on the screen between the third-order red fringe and the third-order yellow- green fringe? m = 3 m = 3 m= 0 m = 3 m = 3 Fringes on observation screenarrow_forward
- In the figure below, a semicircular conductor of radius R = 0.260 m is rotated about the axis AC at a constant rate of 130 rev/min. A uniform magnetic field of magnitude 1.22 T fills the entire region below the axis and is directed out of the page. In this illustration, a wire extends straight to the right from point A, then curves up and around in a semicircle of radius R. On the right side of the semicircle, the wire continues straight to the right to point C. The wire lies in the plane of the page, in a region of no magnetic field. Directly below the axis A C is a region of uniform magnetic field pointing out of the page, vector Bout. If viewed from the right, the wire can rotate counterclockwise, so that the semicircular part can rotate into the region of magnetic field. (a) Calculate the maximum value of the emf induced between the ends of the conductor. V(b) What is the value of the average induced emf for each complete rotation? Consider carefully whether the correct answer is…arrow_forwardA coil of 15 turns and radius 10.0 cm surrounds a long solenoid of radius 2.20 cm and 1.00 103 turns/meter (see figure below). The current in the solenoid changes as I = 6.00 sin(120t), where I is in amperes and t is in seconds. Find the induced emf (in volts) in the 15-turn coil as a function of time. (Do not include units in your answer.) =arrow_forwardA coil of 15 turns and radius 10.0 cm surrounds a long solenoid of radius 1.80 cm and 1.00 103 turns/meter (see figure below). The current in the solenoid changes as I = 5.00 sin(120t), where I is in amperes and t is in seconds. Find the induced emf (in volts) in the 15-turn coil as a function of time. (Do not include units in your answer.) =arrow_forward
- Which vowel does this graph represent (”ah,” “ee,” or “oo”)? How can you tell? Also, how would you be able to tell for the other vowels?arrow_forwardConcept Simulation 26.4 provides the option of exploring the ray diagram that applies to this problem. The distance between an object and its image formed by a diverging lens is 5.90 cm. The focal length of the lens is -2.60 cm. Find (a) the image distance and (b) the object distance.arrow_forwardA bat is flying toward a cave wall at 27.0 m/s. What is the frequency of the reflected sound that it hears, assuming it emits sound at 52.0 kHz? The speed of sound is 341.5 m/s. Multiple Choice о 60.9 kHz О 56.5 kHz о 61.3 kHz О 56.1 kHzarrow_forward
- Compare the slope of your Data Table 2 graph to the average wavelength (Ave, l) from Data Table 2 by calculating the % Difference. Is the % Difference calculated for the wavelength in Data Table 2 within an acceptable % error? Explain why or why not?arrow_forwardThe slope of a graph of velocity, v, vs frequency, f, is equal to wavelength, l. Compare the slope of your Data Table 1 graph to the average wavelength (Ave, l) from Data Table 1 by calculating the % Difference.arrow_forwardExamine the slope of the line on the graph created using the data in Data Table 4 of Period, T2 vs L, the slope of the line is a constant containing the acceleration due to gravity, g. Using the slope of your line, determine the experimental value for g. Compare the value you determined for g from the slope of the graph to the expected value of 9.81 m/s2 by calculating the percent error.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON