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 28E
(a)
To determine
The velocity of object
(b)
To determine
The speed of object
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A proton moves at 5.20 × 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.40 × 103 N/C. Ignore any gravitational effects.
(a) Find the time interval required for the proton to travel 6.00 cm horizontally.
83.33
☑
Your response differs from the correct answer by more than 10%. Double check your calculations. ns
(b) Find its vertical displacement during the time interval in which it travels 6.00 cm horizontally. (Indicate direction with the sign of your answer.)
2.77
Your response differs from the correct answer by more than 10%. Double check your calculations. mm
(c) Find the horizontal and vertical components of its velocity after it has traveled 6.00 cm horizontally.
5.4e5
V
×
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. I + [6.68e4
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each…
(1)
Fm
Fmn
mn
Fm
B
W₁
e
Fmt
W
0
Fit
Wt
0
W
Fit
Fin
n
Fmt
n
As illustrated in Fig.
consider the
person
performing extension/flexion movements of the lower leg
about the knee joint (point O) to investigate the forces and
torques produced by muscles crossing the knee joint. The
setup of the experiment is described in Example
above.
The geometric parameters of the model under investigation,
some of the forces acting on the lower leg and its free-body
diagrams are shown in Figs. and For this system, the
angular displacement, angular velocity, and angular accelera-
tion of the lower leg were computed using data obtained
during the experiment such that at an instant when 0 = 65°,
@ = 4.5 rad/s, and a = 180 rad/s². Furthermore, for this sys-
tem assume that a = 4.0 cm, b = 23 cm, ß = 25°, and the net
torque generated about the knee joint is M₁ = 55 Nm. If the
torque generated about the knee joint by the weight of the lower
leg is Mw 11.5 Nm, determine:
=
The moment arm a of Fm relative to the…
The figure shows a particle that carries a charge of 90 = -2.50 × 106 C. It is moving along the +y
->
axis at a speed of v = 4.79 × 106 m/s. A magnetic field B of magnitude 3.24 × 10-5 T is directed
along the +z axis, and an electric field E of magnitude 127 N/C points along the -x axis.
Determine (a) the magnitude and (b) direction (as an angle within x-y plane with respect to +x-
axis in the range (-180°, 180°]) of the net force that acts on the particle.
+x
+z
AB
90
+y
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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