College Physics
7th Edition
ISBN: 9780321601834
Author: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
Publisher: Addison-Wesley
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Chapter 3, Problem 47E
(a)
To determine
The position of the ball.
(b)
To determine
The velocity of the ball.
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4B. Four electrons are located on the corners of a square, one on each corner, with the sides of the square being 25 cm long. a) Draw a sketch of the scenario and use your sketch to b) Determine the total force (magnitude and direction) on one of the electrons from the other three?
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.
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(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.
Chapter 3 Solutions
College Physics
Ch. 3 - Prob. 1MCQCh. 3 - The equation applies (a) to all kinematic...Ch. 3 - For an object in curvilinear motion, (a) the...Ch. 3 - Prob. 4MCQCh. 3 - Prob. 5MCQCh. 3 - Prob. 6MCQCh. 3 - Prob. 7MCQCh. 3 - Prob. 8MCQCh. 3 - Prob. 9MCQCh. 3 -
A football is thrown on a long pass. Compared to...
Ch. 3 - Prob. 11MCQCh. 3 - Prob. 12MCQCh. 3 - Prob. 13MCQCh. 3 - Prob. 1CQCh. 3 - Prob. 2CQCh. 3 - Prob. 3CQCh. 3 - Prob. 4CQCh. 3 - Prob. 5CQCh. 3 - Prob. 6CQCh. 3 - Prob. 7CQCh. 3 - Prob. 8CQCh. 3 - Prob. 9CQCh. 3 - Prob. 10CQCh. 3 - Prob. 11CQCh. 3 - Prob. 12CQCh. 3 - Prob. 13CQCh. 3 - Prob. 14CQCh. 3 - Prob. 15CQCh. 3 - Prob. 16CQCh. 3 - Prob. 17CQCh. 3 - Prob. 18CQCh. 3 - Prob. 1ECh. 3 - Prob. 2ECh. 3 - The x- and y-components of an acceleration vector...Ch. 3 - If the magnitude of a velocity vector is 7.0 m/s...Ch. 3 - Prob. 5ECh. 3 - Prob. 6ECh. 3 - Prob. 7ECh. 3 - Prob. 8ECh. 3 - Prob. 9ECh. 3 - Prob. 10ECh. 3 - Prob. 11ECh. 3 - Prob. 12ECh. 3 - Prob. 13ECh. 3 - Prob. 14ECh. 3 - Prob. 15ECh. 3 - Using the triangle method, show graphically that...Ch. 3 - Prob. 17ECh. 3 - Prob. 18ECh. 3 - Prob. 19ECh. 3 - Prob. 20ECh. 3 - Prob. 21ECh. 3 - Prob. 22ECh. 3 - Prob. 23ECh. 3 - Prob. 24ECh. 3 - Prob. 25ECh. 3 - Prob. 26ECh. 3 -
Given two vectors, which has a length of 10.0...Ch. 3 - Prob. 28ECh. 3 - Prob. 29ECh. 3 - Prob. 30ECh. 3 - Prob. 31ECh. 3 - In two successive chess moves, a player first...Ch. 3 - Referring to the parallelogram in Fig. 3.29,...Ch. 3 - Prob. 34ECh. 3 - Prob. 35ECh. 3 - A block weighing 50 N rests on an inclined plane....Ch. 3 - Prob. 37ECh. 3 - A person walks from point A to point B as shown in...Ch. 3 - Prob. 39ECh. 3 - Prob. 40ECh. 3 - Fig. 3.32 depicts a decorative window (the thick...Ch. 3 -
A golfer lines up for her first putt at a hole...Ch. 3 - Two students are pulling a box as shown in Fig....Ch. 3 - A ball with a horizontal speed of 1.0 m/s rolls...Ch. 3 - An electron is ejected horizontally at a speed of...Ch. 3 - Prob. 46ECh. 3 - A ball is projected horizontally with an initial...Ch. 3 - An artillery crew wants to shell a position on...Ch. 3 - A pitcher throws a fastball horizontally at a...Ch. 3 - Prob. 50ECh. 3 - The pilot of a cargo plane flying 300 km/h at an...Ch. 3 - Prob. 52ECh. 3 - A convertible travels down a straight, level road...Ch. 3 - A good-guy stuntman is being chased by bad guys on...Ch. 3 - An astronaut on the Moon fires a projectile from a...Ch. 3 - In 2004 two Martian probes successfully landed on...Ch. 3 - Prob. 57ECh. 3 - A stone thrown off a bridge 20 m above a river has...Ch. 3 - If the maximum height reached by a projectile...Ch. 3 - Prob. 60ECh. 3 - Prob. 61ECh. 3 - The apparatus for a popular lecture demonstration...Ch. 3 - A shot-putter launches the shot from a vertical...Ch. 3 - A ditch 2.5 m wide crosses a trail bike path (Fig...Ch. 3 - A ball rolls down a roof that makes an angle of...Ch. 3 - Prob. 66ECh. 3 - A 2.05-m-tall basketball player takes a shot when...Ch. 3 - Prob. 68ECh. 3 - Prob. 69ECh. 3 - A motorboat’s speed in still water is 2.0 m/s. The...Ch. 3 - Prob. 71ECh. 3 - In Exercise 71, what are the relative velocities...Ch. 3 - Prob. 73ECh. 3 - Prob. 74ECh. 3 - Prob. 75ECh. 3 - Prob. 76ECh. 3 - Prob. 77ECh. 3 - Prob. 78ECh. 3 - Prob. 79ECh. 3 - Prob. 80ECh. 3 - Prob. 81ECh. 3 - Prob. 82ECh. 3 - A shopper in a mall is on an escalator that is...Ch. 3 - An airplane is flying at 150 mi/h (its speed in...Ch. 3 - Prob. 85ECh. 3 - Prob. 86ECh. 3 - Prob. 87ECh. 3 - Prob. 88ECh. 3 - Prob. 89E
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