A student (with a "rubbed" nail in her hand) sees another nail floating in a pan of water and decides to test to see whether is "rubbed" also. She holds the tip of the "rubbed" nail to the tip of the floating nail (as shown in the diagram) and sees that there is an attraction between them. What can she conclude from just this observation? O The floating nail has definitely not been rubbed O The floating nail has definitely been "rubbed" O It is not possible to say whether the floating nail has been rubbed or not.

A student (with a "rubbed" nail in her hand) sees another nail floating in a pan of water and decides to test to see whether is "rubbed" also. She holds the tip of the "rubbed" nail to the tip of the floating nail (as shown in the diagram) and sees that there is an attraction between them. What can she conclude from just this observation? O The floating nail has definitely not been rubbed O The floating nail has definitely been "rubbed" O It is not possible to say whether the floating nail has been rubbed or not.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Scientists in the laboratory create a uniform electric field E-9.0x105 kV/m in a region of space where B = 0. ▼ Part A What are the components of the electric field in the reference frame of a rocket traveling in the positive x-direction at 1.4x108 m/s ? Express your answer using two significant figures separated by commas. ΠΕ ΑΣΦ Ex, Ey, Ez = Submit Part B Request Answer Ba, By, B₂ = Submit What are the components of the magnetic field in the reference frame of the rocket? Express your answer using two significant figures separated by commas. ΠΠ ΑΣΦ 8924 ? Request Answer Bed V/m ? T
Two squares plates have the surface charge densities of +o and -o and sides of length L. They are face to face next to each at a distance of 0.01L apart. Let ko = 1. 0.01L a. What is the magnitude of the electric field in the middle between the centers of both plates? b. What is the magnitude of the electric field in the middle between the centers of both plates in the near-field approximation? c. What is the relative error of the near-field approximation?
Part A For points far from the ends of the cylinders, determine the electric field at a radial distance r from the central axis of 2.5 cm E1=N/C Part B For points far from the ends of the cylinders, determine the magnitude of the electric field at a radial distance rfrom the central axis of 6.0 cm Express your answer using two significant figures. |E2|=N/C Part C Determine the direction of the electric field at a radial distance from the central axis of 6.0 . radially inward radially outward Part D For points far from the ends of the cylinders, determine the magnitude of the electric field at a radial distance r from the central axis of 12.3 cm Express your answer using two significant figures. =N/C |E3|=N/C Part E Determine the direction of the electric field at a radial distance rr from the central axis of 12.3 cm .
1. Consider the diagram below. a. A pair of insulated metal spheres, A and B, touch each other, so in etfect they form a single uncharged conductor. b. A positively charged rod is brought near A, but not touching, and electrons in the metal sphere are attracted toward the rod. Charges in the spheres have redistributed, and the negative charge is labeled. Draw the appropriate + signs that are repelled to the far side of B. c. Draw the signs of charge when the spheres are separated while the rod is still present, and
The right end of a rod with length L and total charge Q is at a distance L to the surface of aspherical object with diameter L and total charge Q also, as shown in the figure. The axis ofthe rod and the center of the spherical object are collinear Determine the magnitude of the force exerted by the two objects on each other, and whetherthe force is attractive or repulsive for the following cases:A. Both the rod and the sphere are insulators, the charge Q is uniformly distributed onthe rod and the surface of the sphere.B. The rod is an insulator while the sphere is a conductor. The charge Q is uniformlydistributed on the rod. Use method of images
3. Assume a solid conductor is placed next to a negatively charged sphere. This causes the surface of the conductor near the sphere to become positively charged so that the net electric field inside the conductor is zero. Now we cut a hole so that it is entirely encased by the conductor. а. Does removing part of the inside of the conductor affect the electric field? cross-section of 3D conductor b. What the electric field inside the hole? c. Explain why sensitive equipment are often placed inside conductors. For example, circuit boards are typically shipped in foil-lined bags while cell phone signals are weaker inside warehouses with metal sides.
Suppose we have a charge, q1=3 μC. This charge makes an electric field some distance r=69 cm away from it. Now suppose our measurement of q1 is only accurate to within 0.1 μC, and our measurement of r is only accurate to within 1 cm. a)If we were to calculate the electric field made by that charge at the indicated distance, what would be the uncertainty in our calculation due only to the uncertainty in the size of q1? b)What is the uncertainty in our field calculation due only to the uncertainty in the charge separation r? c)What is the total uncertainty in our electric field calculation due to the uncertainty in the size of q1 and the uncertainty in the charge separation r?
Consider the two conducting spheres, A and B, on insulating stands, as shown below. A A large number of protons are moved from sphere A to sphere B. When a negatively-charged rubber balloon is brought near the two objects, ---. a) the balloon will be attracted to A and have no reaction to B b) the balloon will have no reaction to A and be repelled from B C) the balloon will be repelled from A and have no reaction to B d) the balloon will be attracted to A and repelled from B e) the balloon will be repelled from A and attracted to B f) the balloon will have no reaction to A and be attracted to B
Is the bar in the following picture a conductor or insulator? The arrow represents a period of time that the bar was in contact with the spheres. So the left picture is the before and the right picture is the after. + Conductor Insulator bar 个 + bar +
A 12-cm -long thin rod has the nonuniform charge density λ(x)=(4nC/cm)e−|x|/(6.0cm) , where x is measured from the center of the rod. Part A What is the total charge on the rod? Hint: This exercise requires an integration. Think about how to handle the absolute value sign.
Electric Fields 1. A wire has been given a net positive electric charge Q evenly distributed along its length. The wire has a length of L and is located on the x-axis with its left end at the origin as drawn. Set up the integral you need to do to find the electric field at a distance d to the left of the origin. Some steps you may wish to follow are: a. Figure out the direction the electric field will have at our location x = -d. This will be the same as f b. Write the differential charge dą in terms of the charge per length and a differential length. c. ris a function of x which means we have to integrate to find the electric field. Write down r. d. Put everything together (including the vector direction) into one integral that would allow you to find the E-field. Write this in the box below. e. You are not required to complete the integral and no credit is given for completing the integral. d dE =