physics 1409 baylor vasut

The space station is conducting an experiment with a large parallel plate capacitor in the vacuum and weightlessness of earth orbit. A dc voltage source of 12 V is applied across the plates. The capacitance is 1.5 farads. What is the charge on each plate?

12(1.5)= 18C

Two otherwise identical parallel plate capacitors, with area A=1m^2 and a plate separation d=1cm are charged to a voltage VB=1V. In the first capacitor the plates are separated by empty space. In the 2nd capacitor a dielectric with k=2 completely fills the volume between the plates. The energy and charge of the capacitors is U1 and Q1 for case 1 and U2 and Q2 for case 2. Which of the following statements is true?

2U1=U2 & 2Q1=Q2

The dashed lines in the diagram represent cross sections of equipotential surfaces drawn in 1V increments. A) What is the work done by the electric force to move a 1C charge from A-B? B) What is the work done to move a 1C charge from A-D?

A) 0J B) 1J

As an object acquires a positive charge, its mass generally...

Decreases

Which of the following is true?

If the potential throughout a particular region is CONSTANT, the field throughout that region must be ZERO.

Each of two identical objects carries a net charge. The objects are made from conducting material. one of them is attracted to a + charged rod and the other is repelled by the rod. After the objects are touched together, it is found that they are each repelled by the rod. What can be concluded about the initial charged on the objects?

Initially one object is + and one is - , with the POSITIVE charge having the greater magnitude than the negative charge.

A hydrogen nucleus, which has a charge +e, is situated to the left of a carbon nucleus, which has a charge +6e. Which statement is true?

The electrical force experienced by the hydrogen nucleus is to the LEFT and the magnitude is EQUAL to the force exerted on the carbon nucleus.

A parallel plate has an electric field inside it. At what location is the magnitude of the electric field the greatest?

The magnitude is the same at all of the points.

Four point charges, all +-4 are places at corners of a square with 0.15m long sides, as shown. Calculate the x-component, Ex, of the electric field at the center of the square.

-6.4x10^6 N/C

Two balls with charges +Q and -4Q are fixed at a separation distance of 3R. Is it possible to place another charged ball Q anywhere on the line such that the net force on Q will be zero?

yes, independent of the sign (or value) of Q