Physics
7th Edition
ISBN: 9780321625915
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 20, Problem 32P
To determine
The direction of the compass needle at the location.
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The figure below shows, at left, a solid disk of radius R = 0.600 m and mass 75.0 kg.
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Mounted directly to it and coaxial with it is a pulley with a much smaller mass and a radius of r = 0.230 m. The disk and pulley assembly are on a frictionless axle. A belt is wrapped around the pulley and connected to an electric motor as shown on the right. The turning motor gives the disk
and pulley a clockwise angular acceleration of 1.67 rad/s². The tension T in the upper (taut) segment of the belt is 145 N.
(a) What is the tension (in N) in the lower (slack) segment of the belt?
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(b) What If? You replace the belt with a different one (one slightly longer and looser, but still tight enough that it does not sag). You again turn on the motor so that the disk accelerates clockwise. The upper segment of the belt once again has a tension of 145 N, but now the tension in
the lower belt is exactly zero. What is the magnitude of the angular acceleration (in rad/s²)?
rad/s²
A bridge truss extends x = 217 m across a river (shown in the figure below) where 0 = 40°. The structure is free to slide horizontally to permit thermal expansion. The structural components are connected by pin joints, and the masses of the bars are small compared with the mass of a
1300 kg car at the center. Calculate the force of tension or compression in each structural component (in N).
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Chapter 20 Solutions
Physics
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Ch. 20 - Prob. 10QCh. 20 - Prob. 11QCh. 20 - Prob. 12QCh. 20 - 13. Explain why a strong magnet held near a CRT...Ch. 20 - Prob. 14QCh. 20 - Prob. 15QCh. 20 - Prob. 16QCh. 20 - Prob. 17QCh. 20 - If a moving charged particle is deflected sideways...Ch. 20 - Prob. 19QCh. 20 - Prob. 20QCh. 20 - Prob. 21QCh. 20 - Prob. 22QCh. 20 - Prob. 23QCh. 20 - Why will either pole of a magnet attract an...Ch. 20 - Prob. 25QCh. 20 - Prob. 1MCQCh. 20 - Prob. 2MCQCh. 20 - Prob. 3MCQCh. 20 - Prob. 4MCQCh. 20 - Prob. 5MCQCh. 20 - Prob. 6MCQCh. 20 - Prob. 7MCQCh. 20 - Prob. 8MCQCh. 20 - Prob. 9MCQCh. 20 - Prob. 10MCQCh. 20 - Prob. 11MCQCh. 20 - Prob. 12MCQCh. 20 - Prob. 1PCh. 20 - Prob. 2PCh. 20 - A 240-m length of wire stretches between two...Ch. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10PCh. 20 - Prob. 11PCh. 20 - Find the direction of the force on a negative...Ch. 20 - Prob. 13PCh. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - For a particle of mass mand charge q moving in a...Ch. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - Prob. 19PCh. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Jumper cables used to start a stalled vehicle...Ch. 20 - Prob. 26PCh. 20 - Prob. 27PCh. 20 - A vertical straight wire carrying an upward 28-A...Ch. 20 - Prob. 29PCh. 20 - Prob. 30PCh. 20 - Prob. 31PCh. 20 - Prob. 32PCh. 20 - Prob. 33PCh. 20 - A straight stream of protons passes a given point...Ch. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - A power line carries a current of 95 A west along...Ch. 20 - Prob. 39PCh. 20 - Prob. 40PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - Prob. 43PCh. 20 - Prob. 44PCh. 20 - Prob. 45PCh. 20 - Prob. 46PCh. 20 - A 550-turn horizontal solenoid is 15 cm long. The...Ch. 20 - Prob. 48PCh. 20 - Prob. 49PCh. 20 - (a) Use Ampere’s law to show that the magnetic...Ch. 20 - Prob. 51PCh. 20 - Prob. 52PCh. 20 - Prob. 53PCh. 20 - A circular coil 12.0 cm in diameter and containing...Ch. 20 - Prob. 55PCh. 20 - Prob. 56PCh. 20 - Prob. 57PCh. 20 - One form of mass spectrometer accelerates ions by...Ch. 20 - Prob. 59PCh. 20 - Prob. 60PCh. 20 - Prob. 61PCh. 20 - Prob. 62PCh. 20 - 63. * (II) The following are some values of Band...Ch. 20 - Prob. 64GPCh. 20 - Prob. 65GPCh. 20 - Prob. 66GPCh. 20 - Prob. 67GPCh. 20 - Prob. 68GPCh. 20 - Prob. 69GPCh. 20 - Prob. 70GPCh. 20 - Prob. 71GPCh. 20 - Prob. 72GPCh. 20 - Prob. 73GPCh. 20 - Prob. 74GPCh. 20 - Magnetic fields are very useful in particle...Ch. 20 - Prob. 76GPCh. 20 - Prob. 77GPCh. 20 - Prob. 78GPCh. 20 - Prob. 79GPCh. 20 - Prob. 80GPCh. 20 - Prob. 81GPCh. 20 - Prob. 82GPCh. 20 - Prob. 83GPCh. 20 - Prob. 84GPCh. 20 - Prob. 85GPCh. 20 - Prob. 86GPCh. 20 - Prob. 87GPCh. 20 - The cyclotron (Fig. 20-72?) is a device used to...Ch. 20 - 89. Three long parallel wires are 3.8 cm from one...Ch. 20 - Prob. 90GPCh. 20 - Prob. 91GPCh. 20 - Prob. 92GP
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