College Physics: A Strategic Approach (4th Edition)
4th Edition
ISBN: 9780134609034
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Question
Chapter 21, Problem 22P
To determine
The potential at the surface of the raindrop.
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You are working with a team that is designing a new roller coaster-type amusement park ride for a major theme park. You are present for the testing of the ride, in which an empty 150 kg car is sent along the entire ride. Near the end of the ride, the car is at near rest at the top of a 100 m
tall track. It then enters a final section, rolling down an undulating hill to ground level. The total length of track for this final section from the top to the ground is 250 m. For the first 230 m, a constant friction force of 370 N acts from computer-controlled brakes. For the last 20 m, which is
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Write AK + AU + AE int
= W+Q + TMW
+
TMT + TET + TER for the car-track-Earth system and solve for…
=
12 kg, and m3
Three objects with masses m₁ = 3.8 kg, m₂
find the speed of m3 after it moves down 4.0 m.
m/s
19 kg, respectively, are attached by strings over frictionless pulleys as indicated in the figure below. The horizontal surface exerts a force of friction of 30 N on m2. If the system is released from rest, use energy concepts to
m
m2
m3
i
Three objects with masses m₁ = 3.8 kg, m₂ = 12 kg, and m 19 kg, respectively, are attached by strings over frictionless pulleys as indicated in the figure below. The horizontal surface exerts a force of friction of 30 N on m2. If the system is released from rest, use energy concepts to
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m/s
m
m2
mg
Chapter 21 Solutions
College Physics: A Strategic Approach (4th Edition)
Ch. 21 - By moving a 10 nC charge from point A to point B,...Ch. 21 - Charge q is fired through a small hole in the...Ch. 21 - Prob. 3CQCh. 21 - Prob. 4CQCh. 21 - An electron moves along the trajectory from i to f...Ch. 21 - As shown in Figure Q21.7, two protons are launched...Ch. 21 - Prob. 7CQCh. 21 - Figure Q21.9 shows two points inside a capacitor....Ch. 21 - A capacitor with plates separated by distanced is...Ch. 21 - Prob. 10CQ
Ch. 21 - Prob. 11CQCh. 21 - Prob. 12CQCh. 21 - Prob. 13CQCh. 21 - Prob. 14CQCh. 21 - Prob. 15CQCh. 21 - Prob. 17CQCh. 21 - Prob. 18MCQCh. 21 - A 1.0 nC positive point charge is located at point...Ch. 21 - Prob. 20MCQCh. 21 - Prob. 21MCQCh. 21 - Prob. 22MCQCh. 21 - Prob. 23MCQCh. 21 - Prob. 24MCQCh. 21 - Prob. 25MCQCh. 21 - Prob. 26MCQCh. 21 - A bug zapper consists of two metal plates...Ch. 21 - An atom of helium and one of argon are singly...Ch. 21 - Prob. 29MCQCh. 21 - Prob. 30MCQCh. 21 - Prob. 31MCQCh. 21 - Prob. 32MCQCh. 21 - Moving a charge from point A, where the potential...Ch. 21 - The graph in Figure P21.2 shows the electric...Ch. 21 - It takes 3.0 J of work to move a 15 nC charge from...Ch. 21 - Prob. 4PCh. 21 - A 20 nC charge is moved from a point where V = 150...Ch. 21 - Prob. 6PCh. 21 - At one point in space, the electric potential...Ch. 21 - Prob. 8PCh. 21 - What potential difference is needed to accelerate...Ch. 21 - Prob. 10PCh. 21 - An electron with an initial speed of 500,000 m/s...Ch. 21 - Prob. 12PCh. 21 - A proton with an initial speed of 800,000 m/s is...Ch. 21 - The electric potential at a point that is halfway...Ch. 21 - A 2.0 cm 2.0 cm parallel-plate capacitor has a...Ch. 21 - Two 2.00 cm 2.00 cm plates that form a...Ch. 21 - Prob. 18PCh. 21 - Prob. 19PCh. 21 - Prob. 20PCh. 21 - Prob. 21PCh. 21 - Prob. 22PCh. 21 - a. What is the potential difference between the...Ch. 21 - Prob. 24PCh. 21 - Prob. 25PCh. 21 - Prob. 26PCh. 21 - Prob. 27PCh. 21 - Prob. 28PCh. 21 - Prob. 29PCh. 21 - Prob. 30PCh. 21 - What are the magnitude and direction of the...Ch. 21 - Prob. 32PCh. 21 - Prob. 33PCh. 21 - Prob. 34PCh. 21 - Prob. 35PCh. 21 - Prob. 36PCh. 21 - Two 2.0 cm 2.0 cm square aluminum electrodes,...Ch. 21 - Prob. 38PCh. 21 - An uncharged capacitor is connected to the...Ch. 21 - Prob. 40PCh. 21 - You need to construct a 100 pF capacitor for a...Ch. 21 - Prob. 42PCh. 21 - A switch that connects a battery to a 10 F...Ch. 21 - Prob. 44PCh. 21 - Initially, the switch in Figure P21 .33 is open...Ch. 21 - A 1.2 nF parallel-plate capacitor has an air gap...Ch. 21 - A 25 pF parallel-plate capacitor with an air gap...Ch. 21 - Prob. 48PCh. 21 - A science-fair radio uses a homemade capacitor...Ch. 21 - A parallel-plate capacitor is connected to a...Ch. 21 - A parallel-plate capacitor is charged by a 12.0 V...Ch. 21 - Prob. 52PCh. 21 - To what potential should you charge a 1.0 F...Ch. 21 - Prob. 54PCh. 21 - Capacitor 2 has half the capacitance and twice the...Ch. 21 - Prob. 56PCh. 21 - 50 pJ of energy is stored in a 2.0 cm 2.0 cm 2.0...Ch. 21 - Two uncharged metal spheres, spaced 15.0 cm apart,...Ch. 21 - A 2.0-cm-diameter parallel-plate capacitor with a...Ch. 21 - Prob. 60GPCh. 21 - A 50 nC charged particle is in a uniform electric...Ch. 21 - The 4000 V equipotential surface is 10.0 cm...Ch. 21 - Prob. 63GPCh. 21 - Two point charges 2.0 cm apart have an electric...Ch. 21 - A +3.0 nC charge is at x = 0 cm and a 1.0 nC...Ch. 21 - A 3.0 nC charge is on the x-axis at x = 9 cm and a...Ch. 21 - Prob. 67GPCh. 21 - Electric outlets have a voltage of approximately...Ch. 21 - A Na+ion moves from inside a cell, where the...Ch. 21 - Suppose that a molecular ion with charge 10e is...Ch. 21 - Prob. 71GPCh. 21 - a. What is the electric potential at point A in...Ch. 21 - Prob. 73GPCh. 21 - A proton follows the path shown in Figure P21.63....Ch. 21 - A parallel-plate capacitor is charged to 5000 V. A...Ch. 21 - A proton is released from rest at the positive...Ch. 21 - In the early 1900s, Robert Millikan used small...Ch. 21 - Two 2.0-cm-diameter disks spaced 2.0 mm apart form...Ch. 21 - In proton-beam therapy, a high-energy beam of...Ch. 21 - A 2.5-mm-diameter sphere is charged to 4.5 nC. An...Ch. 21 - A proton is fired from far away toward the nucleus...Ch. 21 - Prob. 82GPCh. 21 - Prob. 83GPCh. 21 - A capacitor consists of two 6.0-cm-diameter...Ch. 21 - The dielectric in a capacitor serves two purposes....Ch. 21 - The highest magnetic fields in the world are...Ch. 21 - The flash unit in a camera uses a special circuit...Ch. 21 - A Lightning Strike Storm clouds build up large...Ch. 21 - Prob. 89MSPPCh. 21 - A Lightning Strike Storm clouds build up large...Ch. 21 - A Lightning Strike Storm clouds build up large...Ch. 21 - A Lightning Strike Storm clouds build up large...
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- In order for Jane to return to base camp, she needs to swing across a river of width D that is filled with alligators. She must swing into a wind exerting constant horizontal force F, F = 110 N, L = 40.0 m, 0 = 50.0°, and her mass to be 50.0 kg. Wind →F Tarzan! Jane (a) with what minimum speed (in m/s) must Jane begin her swing to just make it to the other side? (If Jane can make it across with zero initial velocity, enter 0.) m/s on a vine having length L and initially making an angle with the vertical (see below figure). Take D = 48.0 m, (b) Shortly after Jane's arrival, Tarzan and Jane decide to swing back across the river (simultaneously). With what minimum speed (in m/s) must they begin their swing? Assume that Tarzan has a mass of 80.0 kg. m/sarrow_forwardR=2.00 12V 2.00 4.00 4.002 What is the current in one of the 4.0 Q resistors? An isolated point charge q is located at point X. Two other points Y and Z are such that YZ2 XY. Y X What is (electric field at Y)/(electric field at Z)?arrow_forwardTwo objects (m₁ = 4.75 kg and m₂ 2.80 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 4.75-kg object is released from rest at a point h = 4.00 m above the table mg m (a) Determine the speed of each object when the two pass each other. m/s (b) Determine the speed of each object at the moment the 4.75-kg object hits the table. m/s (c) How much higher does the 2.80-kg object travel after the 4.75-kg object hits the table? marrow_forward
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