College Physics
1st Edition
ISBN: 9781938168048
Author: Paul Peter Urone, OpenStax, Roger Hinrichs
Publisher: OpenStax
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Textbook Question
Chapter 20, Problem 23PE
A power transmission line is hung from metal towers with glass insulators having a resistance of 1.00×109 O. What current flows through the insulator if the voltage is 200 kV? (Some high-voltage lines are DC.)
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The magnitude of the net force exerted in the x direction on a 3.00-kg particle varies in time as shown in the figure below.
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Figure 27-65 Problem 63.
Thor flies by spinning his hammer really fast from a leather strap at the end of the handle, letting go, then grabbing it and having it pull him. If Thor wants to reach escape velocity (velocity needed to leave Earth’s atmosphere), he will need the linear velocity of the center of mass of the hammer to be 11,200 m/s. Thor's escape velocity is 33532.9 rad/s, the angular velocity is 8055.5 rad/s^2. While the hammer is spinning at its maximum speed what impossibly large tension does the leather strap, which the hammer is spinning by, exert when the hammer is at its lowest point? the hammer has a total mass of 20.0kg.
Chapter 20 Solutions
College Physics
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