ーの The negative charge O curves upwards curves downwards goes straight through goes out of the page X X

A positively charged rod is brought near a metal electroscope that is initially uncharged. As shown in the figure, the rod does not touch the electroscope. There is no charge transfer between the electroscope and rod, but the leaves of the electroscope move apart from each other when the rod is brought near the top of the electroscope. Which one of the following choices is the best explanation for this phenomenon? + + + + + + electroscope O Protons are repelled by the rod into the leaves of the electroscope. Electrons are attracted out of the leaves of the electroscope toward the rod. Protons are repelled into the leaves of the electroscope and electrons are attracted out of the leaves of the electroscope. O Positively charged electrons are repelled by the rod into the leaves of the electroscope. O Positively charged electrons are repelled into the leaves of the electroscope and regular electrons are attracted out of the leaves of the electroscope.

Particles A and B collide to produce particles C, D, and E: A+B ---> C +D+E. A has a charge of le, B has no charge, C has a charge of -2e, and D has a charge of 1e. What charge does E have? -2e -e +2e none of these

Two m =6.0 g point charges on 1.0 m long threads rework each other after being charged to a= 90 nC WHAT I’D THE ANGLE?

positive charge +90 moves from 1 to 2 along the dashed line, what is the sign of the work done on +90 by the +Q charge? 10. A Zero B Positive C Negative

What are the units of the electric field? Select all that are true.V V/N N/C V/m J/C

A negative charge Q equals -10 muC moves to the right in a uniform electric field if you electron gains 80 muJ of electric potential energy after moving 15 cm give the magnitude and direction of the electric field

A point charge of 33 uC is placed at a distance of 36 cm from another identical charge. A charge of -1.5 uC is transferred from point a to point b as shown in the figure. Determine: a) The change in electrical potential energy b) If the -1.5 uC charge has an initial velocity of zero. What is its final velocity if it has a mass of 5.0 x 10-15 kg?

Ch 18 q3 In 1910 Rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil. He unexpectedly observed a few of the particles scattered almost directly backward. This result was not consistent with then current models of atomic structure and led Rutherford to propose the existence of a very dense concentration of positive charge at the center of an atom—the atomic nucleus. The alpha particle has a charge of +2e and the gold nucleus a charge of +79e. Suppose that an alpha particle is initially a great distance from the gold, has a kinetic energy of 4.20 MeV (4.20  106 eV), and is headed directly at a gold nucleus. How close will the particle come to the center of the nucleus? Treat the nucleus and the alpha particle as point charges.

11:05 < Back E_M_HW-2.pdf Dashboard +q 000 000 Calendar a 3 Pra 4) Four charges are an equal distance r from some origin. What is the direction of the electric field, E, at the origin, due to the four charges? Then what is the magnitude of E at the origin. Charge values are given in the picture. 12 国 To Do Q ام B Notifications Inbox