Student Workbook for College Physics: A Strategic Approach Volume 1 (Chs. 1-16)

3rd Edition

ISBN: 9780321908865

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Textbook Question

Chapter 21, Problem 88MSPP

A Lightning Strike

Storm clouds build up large negative charges, as described in the chapter. The charges dwell in charge centers, regions of concentrated charge. Suppose a cloud has –25 C in a 1.0|dash|km|dash|diameter spherical charge center located 10 km above the ground, as sketched in Figure P21.86. The negative charge center attracts a similar amount of positive charge that is spread on the ground below the cloud.

Figure P21.86

Chapter 21, Problem 88MSPP, A Lightning Strike Storm clouds build up large negative charges, as described in the chapter. The

The charge center and the ground function as a charged capacitor, with a potential difference of approximately 4 × 10⁸ V. The large electric field between these two "electrodes" may ionize the air, leading to a conducting path between the cloud and the ground. Charges will flow along this conducting path, causing a discharge of the capacitor-a lightning strike.

What is the approximate capacitance of the charge center +ground system?

A. 6 × 10^–8F

B. 2 × 10⁷ F

C. 4 × 10⁶ F

D. 8 × 10⁶ F

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Chapter 21, Problem 87MSPP

Chapter 21, Problem 89MSPP

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3.63 • Leaping the River II. A physics professor did daredevil stunts in his spare time. His last stunt was an attempt to jump across a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at 53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower than the top of the ramp. The river itself was 100 m below the ramp. Ignore air resistance. (a) What should his speed have been at the top of the ramp to have just made it to the edge of the far bank? (b) If his speed was only half the value found in part (a), where did he land? Figure P3.63 53.0° 100 m 40.0 m→ 15.0 m

Please solve and answer the question correctly please. Thank you!!

Chapter 21 Solutions

Student Workbook for College Physics: A Strategic Approach Volume 1 (Chs. 1-16)

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 - Why is the potential energy of two opposite...Ch. 21 - An electron (q = e) completes half of a circular...Ch. 21 - An electron moves along the trajectory from i to f...Ch. 21 - The graph in Figure Q21.61Q shows the electric...Ch. 21 - As shown in Figure Q21.7, two protons are launched...Ch. 21 - Each part of Figure Q21.8 shows one or more point...Ch. 21 - Figure Q21.9 shows two points inside a capacitor....Ch. 21 - A capacitor with plates separated by distanced is...

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