Question

14. A ping-pong ball covered with a conducting graphite coating has a mass of 5.0 x 10- kg and a charge of 4.0 C. What electric field directed upward will exactly balance the weight of the ball? (g-9.8 m/s) a. b, c. d. 8.2×102 N/C 1.2×104 N/C 2.0 x 10- N/C 5.1×106 N/C 15. Two small objects are suspended from threads. When the objects are moved close together, they attract one another. Which of the following could produce this result? a. One object is positively charged and the other is negatively charge. b. One object is positively charged and the other is uncharged. c. One object is negatively charged and the other is uncharged. d. All of the above could result in such attraction.
0 0
Add a comment Improve this question Transcribed image text
Answer #1

( 5 x 3) (9.8) =(4 x106 )(E) 1 5 ( botn is hanged dve to in duced 十中 due to n duced harye

Add a comment
Know the answer?
Add Answer to:
14. A ping-pong ball covered with a conducting graphite coating has a mass of 5.0 x...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • CODE GIVEN % Create a program to plot the motion of the ping pong ball with...

    CODE GIVEN % Create a program to plot the motion of the ping pong ball with drag. % The program will take inputs for velocity in m/s and angle of launch. % note that with a high speed camera I estmated a launch speed for a ping % pong ball could be 30 m/s. vel=30; %m/s angle=60; % convert the degrees into radians so MATLAB likes it angle=angle*pi/180; % set initial values (time, distance, mass, gravity, drag) x(1)=0; % meters...

  • Home work foy ch 23 1. A cork ball that is covered with conducting paint and...

    Home work foy ch 23 1. A cork ball that is covered with conducting paint and charged to 4 × 10-10C is touched by an identical but un- charged cork ball; the balls then separate. This second cork ball is then touched by a third uncharged cork ball, and they separate. What is the charge of each ball at the end. and how many excess electrons does each ball have? 2. An electron and a proton attract each other with...

  • Monday Homework Problem 1.4 Your standard number 2 mechanical pencil has a graphite lead with mass...

    Monday Homework Problem 1.4 Your standard number 2 mechanical pencil has a graphite lead with mass 0.05g. How many protons are in this quantity of graphite? The atomic mass of carbon is 12g/mole and the atomic number is 6. Select One of the Following: (a) 3.1 x 1010 protons (b) 1.5 x 1022 protons (c) 5.1 x 1024protons (d) 2.3 x 1021 protons (e) 6.5 x 1023 protons Monday Homework Problem 1.5 The dielectric plate of an electrophorus is charged...

  • 1. a.) An object carries a charge of -6.1 µC, while another carries a charge of...

    1. a.) An object carries a charge of -6.1 µC, while another carries a charge of -2.0 µC. How many electrons must be transferred from the first to the second object so that both objects have the same charge? b.) Suppose a thin conducting wire connects two conducting spheres. A negatively charged rod is brought near one of the spheres, the wire between them is cut, and the charged rod is taken away. Which one of the following is true?...

  • Problem 2: An imaginary particle π has mass m 5 x 10-27 kg and charge q...

    Problem 2: An imaginary particle π has mass m 5 x 10-27 kg and charge q +3c 4.8x 10-19 C. Compare the magnitude of the electric repulsion between two π particles with that of gravitational attraction between them. Problem 3: Two equal charges 22 x 10-6 C are located at -0, y 0.3 m and z 0, V0.3 m respectively. What are the magnitude and direction of the total electric force that q1 and g2 exert on a third charge...

  • 1. Figure G: The ideal battery has an emf of 14 V. What is the current...

    1. Figure G: The ideal battery has an emf of 14 V. What is the current (A) in R a) 0.200 D0.250 b) 1.00 g) 0.100 c)0.500 h)0.235 2. Figure C shows, in cross section, a spherical conducting shell that surrounds a particle of charge -2e. The shell d) 0.667 i) 1.23 e) 0.750 has a net charge of -6e. What is the magnitude (N/C) of the electric field at point P, at distance2.00 m from the j)0.820 center of...

  • 5. When all of the sample to be collected has left the column, will the drop...

    5. When all of the sample to be collected has left the column, will the drop of solution coming off the tip of the column be acidic, basic or neutral? 6. How many H+ ions would be displaced from the ion exchange column by 1 Cu2+ ion? 7. Binding sites on the ion exchange resin are saturated with which ion before the sample solution is added? 8. Ions are displaced from the resin binding sites by any ion that has...

  • Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra...

    Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT