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Chapter 16: Q3Q (page 662)

The graph in Figure 16.57 shows the electric potential energy for a system of two interacting objects, as a function of the distance between the objects. What system(s) might this graph represent?

(1) Two protons, (2) Two sodium ions, (3) Two neutrons, (4) Two chloride ions, (5) Two electrons, (6) A proton and an electron, (7) A sodium ion and a chloride ion.

Short Answer

Expert verified

The correct answers are (6) a proton and an electron and (7) a sodium and chloride ion.

Step by step solution

01

Identification of given data

The given data can be listed below,

  • The electric potential energy is a function of distance between two objects.
02

Concept/Significance of electric potential energy.

The energy expended to transport the particle away from the plate is stored as electrical potential energy in the particle.

03

Determination of which system(s) might this graph represent.

The electric potential energy of two objects is given by,

U=q1q24蟺蔚0r

Here,q1is the charge on first object,q2is the charge on second object, and r is the distance between two objects.

As shown by Figure 16.57, the potential energy has a negative value, which means both charges and have a different sign of the charge. Based on this, the correct answers are:

Thus, the correct answers are (6) a proton and an electron and (7) a sodium and chloride ion.

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Most popular questions from this chapter

If the electric field exceeds about 3脳106鈥�N/C in air, a spark occurs. Approximately, what is the absolute value of the maximum possible potential difference between the plates of a capacitor whose gap is 3 mm, without causing a spark in the air between them?

A capacitor consists of two charged disks of radiusR separated by a distances, whereR>>s. The magnitude of the charge on each disk is Q. Consider points A, B, C, and D inside the capacitor, as shown in Figure 16.88. (a) Show that螖V=VC鈭�VAis the same for these paths by evaluating 鈭哣 along each path: (1) Path 1:A = B = C, (2) Path 2:A=C, (3) Path 3:A=D=B=C. (b) If,Q=43鈥坝糃,R=4鈥尘,s1=1.5鈥尘m ands2=0.7鈥尘m, what is the value of螖V=VC鈭�VA? (c) Choose two different paths from point A back to point A again, and show that鈭�V=0for a round trip along both of these paths.

What is the potential at the centre of a spherical shell ofradius Rthat has a charge Quniformly distributed over its surface? Don鈥檛 do an integral of the electric field; just add up the contributions to the potential by the charges.

If throughout a particular region of space the potential can be expressed as V=4xz+2y-5z, what are the vector components of the electric field at location (x,y,z)?

You move from location i at 鉄�2,7,5鉄�鈥�mto locationf at 鉄�5,6,12鉄�鈥�m. All along this path there is a nearly uniform electric field of 鉄�1000,200,鈭�510鉄�鈥�N/C. Calculate Vf鈭�Vi, including sign and units.
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