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7. [-/2 Points] DETAILS SERPSE10 23.3.OP.010. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The electric field everywhere on the surface of a thin, spherical shell of radius 0.770 m is of magnitude 878 N/C and points radially toward the center of the sphere. (a) What is the net charge within the sphere's surface? nc (b) What is the distribution of the charge inside the spherical shell? O The positive charge has a spherically symmetric charge distribution. O The negative charge has a spherically symmetric charge distribution. O The negative charge has an asymmetric charge distribution. O The positive charge has an asymmetric charge distribution. 8. [-/1 Points] DETAILS SERPSE10 23.4.OP.018.CTX. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You are an astronaut, living for a long time interval in the International Space Station (ISS). During your off-duty hours, you have run out of books to read and video games to play. So, your mind wanders to your hobby of music. The last book you read discussed Gauss's law, and you get an inspiration. You plan to attach two nonconducting spheres of radius r = 1.60 cm together using a light insulating string of length L and linear mass density / = 8.00 x 10 kg/m, with the string attached at the surface of each sphere. Then, using the electrical system on the ISS, you will be able to electrify each sphere to a charge of Q = 95.0 uC, uniformly spread over the surface of the sphere. The combination will then be allowed to float freely in the ISS. The spheres will repel, creating a tension in the string. When you pluck the string, you wish it to play a perfect middle C, at 262 Hz. Determine the length of the string (in cm) that you need. (Assume the frequency of 262 Hz is the fundamental frequency. Round your answer to at least one decimal place.) cm12. [-/2 Points] DETAILS SERPSE10 22.4.P.018. MY NOTES ASK YOUR TEACHER Two charged particles are located on the x axis. The first is a charge +Q at x = -a. The second is an unknown charge located at x = +3a. The net electric field these charges produce at the origin has a magnitude of 2k Q/a2. What are the two possible values of the unknown charge? negative value x Q positive value * Q Need Help? Read It