Modified Mastering Physics With Pearson Etext -- Standalone Access Card -- For Physics For Scientists & Engineers With Modern Physics (5th Edition)
5th Edition
ISBN: 9780134402628
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 28, Problem 60GP
To determine
The magnetic field at a distance y above the plane.
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A particle with charge q and momentum p, initially moving
along the x axis, enters a region where a uniform magnetic
field Bo extends over a
width x = l as shown in
O Bo
Fig. 20-70. The particle
is deflected a distance d
in the +y direction as it
traverses the field. Deter-
mine (a) whether q is
positive or negative, and
(b) the magnitude of its
momentum p in terms of
9, В,, е, and d.
FIGURE 20-70
Problem 85.
An electron enters a uniform magnetic field B = 0.23 T at
a 45° angle to B. Determine the radius r and pitch p (distance
between loops) of the electron's helical path assuming its
speed is 3.0 × 10° m/s.
See Fig. 20–68.
В
-2r.
FIGURE 20-68
В
Problem 79.
11 In Fig. 28-30, a charged particle
enters a uniform magnetic field B
with speed vo, moves through a half-
circle in time To, and then leaves the
field. (a) Is the charge positive or
negative? (b) Is the final speed of
the particle greater than, less than,
or equal to vo? (c) If the initial speed
had been 0.5vo, would the time spent in field B have been greater
than, less than, or equal to T,? (d) Would the path have been a
half-circle, more than a half-circle, or less than a half-circle?
OF
Figure 28-30 Question 11.
Chapter 28 Solutions
Modified Mastering Physics With Pearson Etext -- Standalone Access Card -- For Physics For Scientists & Engineers With Modern Physics (5th Edition)
Ch. 28 - The magnetic field due to current in wires in your...Ch. 28 - Compare and contrast the magnetic field due to a...Ch. 28 - Two insulated long wires carrying equal currents I...Ch. 28 - Prob. 4QCh. 28 - (a) Write Ampres law for a path that surrounds...Ch. 28 - Use the Biot-Savart law to show that the field of...Ch. 28 - Prob. 9QCh. 28 - Why does twisting the lead-in wires to electrical...Ch. 28 - Compare the Biot-Savart law with Coulombs law....Ch. 28 - Will a magnet attract any metallic object, such as...
Ch. 28 - An unmagnetized nail will not attract an...Ch. 28 - Prob. 18QCh. 28 - Prob. 5PCh. 28 - (II) A third wire is placed in the plane of the...Ch. 28 - Prob. 18PCh. 28 - (II) Let two long parallel wires, a distance d...Ch. 28 - (II) Repeat Problem 19 if the wire at x = 0...Ch. 28 - Prob. 36PCh. 28 - (II) A wire, in a plane, has the shape shown in...Ch. 28 - (II) A circular conducting ring of radius R is...Ch. 28 - Prob. 40PCh. 28 - Prob. 56GPCh. 28 - A rectangular loop of wire carries a 2.0-A current...Ch. 28 - Prob. 60GPCh. 28 - A 175-g model airplane charged to 18.0 mC and...
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- A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in a uniform magnetic field of magnitude 4.0105 T that is directed vertically downward, what is tire resultant magnitude of the magnetic field 20 cm above the wire? 20 cm below the wire?arrow_forwardTwo long coaxial copper tubes, each of length L, are connected to a battery of voltage V. The inner tube has inner radius o and outer radius b, and the outer tube has inner radius c and outer radius d. The tubes are then disconnected from the battery and rotated in the same direction at angular speed of radians per second about their common axis. Find the magnetic field (a) at a point inside the space enclosed by the inner tube r d. (Hint: Hunk of copper tubes as a capacitor and find the charge density based on the voltage applied, Q=VC, C=20LIn(c/b) .)arrow_forwardRepeat the previous problem, but with the loop lying flat on the ground with its current circulating counterclockwise (when viewed from above) in a location where Earth’s field is north, but at an angle 45.0° below the horizontal and with a strength of 6.0105T.arrow_forward
- Check Your Understanding In what orientation would a magnetic dipole have to be to produce (a) a maximum torque in a magnetic field? (b) A maximum energy of the dipole?arrow_forwardAssume the region to the right of a certain plane contains a uniform magnetic field of magnitude 1.00 mT and the field is zero in the region to the left of the plane as shown in Figure P22.71. An electron, originally traveling perpendicular to the boundary plane, passes into the region of the field. (a) Determine the time interval required for the electron to leave the field-filled region, noting that the electrons path is a semicircle. (b) Assuming the maximum depth of penetration into the field is 2.00 cm, find the kinetic energy of the electron.arrow_forward12.3 Check Your Understanding Using Example 12.3, keeping the currents the same in wires 1 and 3, what should the current be in wire 2 to counteract the magnetic fields horn wires 1 and 3 so that there is no net magnetic field at point P?arrow_forward
- Check Your Understanding A straight, flexible length of copper wire is immersed in a magnetic field that is directed into the page, (a) If the wire's arrent runs in the +x-direction, which way will the wire bend? (b) Which way will the wire bend if the current nms in the -x-direction?arrow_forwardIs the magnetic field inside a toroid completely uniform? Almost uniform?arrow_forwardIf a charged particle moves in a straight line, can you conclude that there is no magnetic field present?arrow_forward
- Calculate the magnitude of the magnetic field at a point 25.0 cm from a long, thin conductor carrying a current of 2.00 A.arrow_forward(c) Two ions X3- and Y+ moving at the same speed enter a uniform magnetic field perpendicularly. If the radius produced by X3- and Y+ is in the ratio of 6: 5, what is the ratio of the (momentum of X³- ion) / (momentum of Y* ion)?arrow_forward(I) Find the direction of the force on a negative charge for each diagram shown in Fig. 20-52, where v (green) is the velocity of the charge and B (blue) is the direction of the magnetic field. (O means the vector points inward. O means it points outward, toward you.) B B B (a) B (c) (b) (d) FIGURE 20-52 B Problem 12. (e) (f)arrow_forward
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