Physics 2 quiz Chapter 16 and Reading Check

Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of magnitude F due to the other. With time, charge gradually diminishes on both spheres by leaking off. When each of the spheres has lost half its initial charge, what will be the magnitude of the electrostatic force on each one

1/4F

What charge, in microcoulombs, do 7.25 X 10^15 protons possess

1177.0

How many protons make up a charge of +20.4 X 10^-14C

1273408.0

two points charges Q1= -22.11 uc and Q2= 41.9 uc. are separated by a distance of t=8.6 cm. The electric field at the point P is zero. How far in cm from Q1 is P

22.8

what is the magnitude of the electric field (in N/C) 86.1 cm directly above an isolated 2.1 X 10^-6 C Charge

25495.0

A proton is released in a uniform electric field, and it expierences and electric force of 4.3 X 10^-14 N toward the south. What is the magnitude (in (N/C) of the electric field

268414.0

what is the magnitude of the electric force of attraction between an atoms nucleus (q=+34-e) and its innermost electron if the distance between them is 1.61 X 10^-12 m

3.03

what is the magnitude (in Newtons) on the force a 860-uc charge exerts on a 342-nC charge 26.3-cm away

38.3

determine the magnitude of the acceleration (in m/s2) experienced by an electron in an electric field of 0.227 N/C

39918111965

Four point charges Q of equal magnitude and sign are arranged on three of the corners of the square of side d as shown in the figure. which one of the arrows shown represents the net force acting on the charge at the upper right hand corner of the square

D

True or False: electrically neutral objects cannot exert an electrical force on each other, but they can exert a gravitational force on each other

False

two point charges Q1 and Q2, are separated by a distance R. If the magnitudes of both charges are halved and their separation is also halved, what happens to the electrical force that each charge exerts on the other one

It remains the same

Two stationary point charges Q1 and Q2 are shown in the figure along with a sketch of some field lines representing the electric field produced by them. What can you deduce from the sketch

Q1 is negative and Q2 is positive, and the magnitude of Q1 is less than the magnitude of Q2

a negatively-charged rod is brought close to (but does not touch) two neutral spheres that are in contact with each other but insulated from the ground. IF the two spheres are then separated, what kind of charge will be on the spheres

The sphere near the charged rod becomes positive and the other one becomes negative

A solid aluminum cube rests on a wooden table in a region where a uniform external electric field is directed straight upward. What can we say concerning the charge on the top surface of the cube

The top surface is charged positively

a plastic rod is charged up by rubbing a wool cloth, and brought to an initially nuetral metallic sphere that is insulated from ground. It is allowed to touch the sphere for a few seconds, and then is separated form the sphere by a small distance. After the rod is separated, the rod......

is repelled by the sphere

Two uncharged metal spheres, #1 and #2, are mounted on insulating support rods. A third metal sphere, carrying a positive charge, is then placed near #2. Now a copper wire is momentarily connected between #1 and #2 and then removed. Finally, sphere #3 is removed. In this final state

sphere #1 carries positive charge and #2 carries negative charge

four tiny charged particles (two having a charge +q and two having a charge -q) are distributed on the x and y axes as shown in the figure. Each charge is equidistant from the origin. IN which direction is the net electric field at the point P on the y-axis

upwards and towards the left