Concept explainers
Four lightweight balls A, B, C, and D are suspended by threads. Ball A has been touched by a plastic rod that was rubbed with wool. When the balls are brought close together, without touching, the following observations are made:
- Balls B, C, and D are attracted to ball A.
- Balls B and D have no effect on each other.
- Ball B is attracted to ball C.
What are the charge states (positive, negative, or neutral) of balls A, B, C, and D? Explain.
To explain: The charge states of balls A, B, C and D.
Answer to Problem 1CQ
The charge states of balls A, B, C and D are negative, neutral, positive, and neutral respectively.
Explanation of Solution
The plastic rod acquires a negative charge, when it is rubbed by wool. Initially, when the rod touches the ball A, it gets polarized and acquires a negative charge. Hence, the charge on ball A is negative.
Balls B, C, and D are attached to ball A:
Balls B, C, and D are attached to ball A due to the attraction force because unlike charges attract. This is possible only if charges on balls B, C, and D are either positive or neutral.
Balls B and D have no effect on each other:
This statement indicates that the balls B and D neither attracted nor repulsed with each other. The like charges repel and unlike charges attract. Therefore, balls B and C posses no charge either positive or negative. Hence, balls B and D are neutral.
Ball B is attracted to ball C:
This statements concludes that the ball C is charged and that is the reason the neutral ball B is attracted towards C. From first statement, it is obvious that the charge of ball C must be either positive or neutral. Ball C is not neutral and hence the charge on ball C is positive.
Conclusion:
Thus, the charge states of balls A, B, C and D are negative, neutral, positive, and neutral respectively.
Want to see more full solutions like this?
Chapter 20 Solutions
College Physics: A Strategic Approach (3rd Edition)
Additional Science Textbook Solutions
Human Anatomy & Physiology (2nd Edition)
Chemistry: The Central Science (14th Edition)
Organic Chemistry (8th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
Campbell Essential Biology with Physiology (5th Edition)
Microbiology with Diseases by Body System (5th Edition)
- air is pushed steadily though a forced air pipe at a steady speed of 4.0 m/s. the pipe measures 56 cm by 22 cm. how fast will air move though a narrower portion of the pipe that is also rectangular and measures 32 cm by 22 cmarrow_forwardNo chatgpt pls will upvotearrow_forward13.87 ... Interplanetary Navigation. The most efficient way to send a spacecraft from the earth to another planet is by using a Hohmann transfer orbit (Fig. P13.87). If the orbits of the departure and destination planets are circular, the Hohmann transfer orbit is an elliptical orbit whose perihelion and aphelion are tangent to the orbits of the two planets. The rockets are fired briefly at the depar- ture planet to put the spacecraft into the transfer orbit; the spacecraft then coasts until it reaches the destination planet. The rockets are then fired again to put the spacecraft into the same orbit about the sun as the destination planet. (a) For a flight from earth to Mars, in what direction must the rockets be fired at the earth and at Mars: in the direction of motion, or opposite the direction of motion? What about for a flight from Mars to the earth? (b) How long does a one- way trip from the the earth to Mars take, between the firings of the rockets? (c) To reach Mars from the…arrow_forward
- No chatgpt pls will upvotearrow_forwarda cubic foot of argon at 20 degrees celsius is isentropically compressed from 1 atm to 425 KPa. What is the new temperature and density?arrow_forwardCalculate the variance of the calculated accelerations. The free fall height was 1753 mm. The measured release and catch times were: 222.22 800.00 61.11 641.67 0.00 588.89 11.11 588.89 8.33 588.89 11.11 588.89 5.56 586.11 2.78 583.33 Give in the answer window the calculated repeated experiment variance in m/s2.arrow_forward
- Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning