EBK PHYSICS OF EVERYDAY PHENOMENA
8th Edition
ISBN: 8220106637050
Author: Griffith
Publisher: YUZU
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Chapter 14, Problem 13CQ
If a uniform magnetic field is directed horizontally toward the east, and a negative charge is moving east through this field, is there a magnetic force on this charge, and if so, in what direction? Explain.
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need help with the first part
A ball is thrown with an initial speed v, at an angle 6, with the horizontal. The horizontal range of the ball is R, and the ball reaches a maximum height R/4. In terms of R and g, find the following.
(a) the time interval during which the ball is in motion
2R
(b) the ball's speed at the peak of its path
v=
Rg 2
√ sin 26, V 3
(c) the initial vertical component of its velocity
Rg
sin ei
sin 20
(d) its initial speed
Rg
√ sin 20
×
(e) the angle 6, expressed in terms of arctan of a fraction.
1
(f) Suppose the ball is thrown at the same initial speed found in (d) but at the angle appropriate for reaching the greatest height that it can. Find this height.
hmax
R2
(g) Suppose the ball is thrown at the same initial speed but at the angle for greatest possible range. Find this maximum horizontal range.
Xmax
R√3
2
An outfielder throws a baseball to his catcher in an attempt to throw out a runner at home plate. The ball bounces once before reaching the catcher. Assume the angle at which the bounced ball leaves the ground is the same as the angle at which the outfielder threw it as shown in the figure, but that the ball's speed after the bounce is one-half of what it was before the bounce.
8
(a) Assuming the ball is always thrown with the same initial speed, at what angle & should the fielder throw the ball to make it go the same distance D with one bounce (blue path) as a ball thrown upward at 35.0° with no bounce (green path)?
24
(b) Determine the ratio of the time interval for the one-bounce throw to the flight time for the no-bounce throw.
Cone-bounce
no-bounce
0.940
Chapter 14 Solutions
EBK PHYSICS OF EVERYDAY PHENOMENA
Ch. 14 - The north pole of a handheld bar magnet is brought...Ch. 14 - If the distance between the south poles of two...Ch. 14 - In what respects is the force between two magnetic...Ch. 14 - Is it possible for a bar magnet to have just one...Ch. 14 - Does a compass needle always point directly...Ch. 14 - If we regard the Earth as a magnet, does its...Ch. 14 - We visualized the magnetic field of the Earth by...Ch. 14 - A horizontal wire is oriented along a north-south...Ch. 14 - A horizontal wire is oriented along an east-west...Ch. 14 - Is the force exerted by one current-carrying wire...
Ch. 14 - A uniform magnetic field is directed horizontally...Ch. 14 - A positively charged particle is momentarily at...Ch. 14 - If a uniform magnetic field is directed...Ch. 14 - Why does the magnetic force on a current-carrying...Ch. 14 - If we look down at the top of a circular loop of...Ch. 14 - If we were to represent the current loop of...Ch. 14 - A current-carrying rectangular loop of wire is...Ch. 14 - If the rectangular loop of wire shown in question...Ch. 14 - Because the magnetic fields of a coil of wire and...Ch. 14 - In what respect is a simple ammeter designed to...Ch. 14 - Does an ac motor require a split-ring commutator...Ch. 14 - Which type of motor typically runs at a fixed...Ch. 14 - If Faraday wound enough turns of wire on the...Ch. 14 - Is a magnetic flux the same as a magnetic field?...Ch. 14 - A horizontal loop of wire has a magnetic field...Ch. 14 - Suppose the magnetic flux through a coil of wire...Ch. 14 - Two coils of wire are identical except that coil....Ch. 14 - Do the sensors that detect vehicles at stoplights...Ch. 14 - Under which conditions are inductive detectors...Ch. 14 - If the magnetic field produced by the magnets in a...Ch. 14 - Does a simple generator produce a steady direct...Ch. 14 - A simple generator and a simple electric motor...Ch. 14 - Can a transformer be used, as shown in the...Ch. 14 - By stepping up the voltage of an...Ch. 14 - Prob. 1ECh. 14 - Prob. 2ECh. 14 - Prob. 3ECh. 14 - Prob. 4ECh. 14 - Prob. 5ECh. 14 - Prob. 6ECh. 14 - Prob. 7ECh. 14 - Prob. 8ECh. 14 - Prob. 9ECh. 14 - Prob. 10ECh. 14 - Prob. 11ECh. 14 - Prob. 12ECh. 14 - Prob. 13ECh. 14 - Prob. 14ECh. 14 - Prob. 15ECh. 14 - Prob. 16ECh. 14 - Prob. 1SPCh. 14 - Prob. 2SPCh. 14 - Prob. 3SPCh. 14 - Prob. 4SP
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