State the law of conservation of electric chave 1vavin, h7ee,w)3jrge.

  Is it possible for two negative charges to attract zlfp4:1 sf;n , opxvt6each other?

  Is it possible for a pos o 8zubrgcdgno(1 ;z:1 3ij*yzitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod av lwkip;4g ;*jcquires a posig;v;wi *j kpl4tive charge and the silk

  A proton carries a

  The model of the atom shows aqre:vx5a)hem)* w4 vy4usznxw2a 1 (i

  A neutral atom always ha )rbw e,8 tklry:tjs()s

  An atom has more electrons than protons. nc,p/1l5, w4s 5vtmfzb4wwhl The atom is

  Materials in which the electrons are bound very tightly to the nuclei a,+ oigx,mz*de9q:h qmre referred to aqx + q: igm,h,zdme*9os

  Materials in which the electrons are bound very loosely to the nuclei and can m5ec x 9 8j,6bpnguh2ryove about freely within the ng5,9xe 2h68cbrjup ymaterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal slk9k l 461 fd.hk /x,gjdyu2ebar. The end of the ukx ef942k s,6dg 1ylj.hld/kmetal bar farthest from the charged rod will be charged

  Sphere A carries a net positivlwsnhj z j /w6i6*,dzs 9,rcr:e charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemj 6z*9dj/r:w6w, sn,sl rh izcent is correct?

  How can a negatively charg :ndty.9tcg/fzhgsz r v0o0gy6d3, m3ed rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charger3. ; ojqev+6uoue*b +/zhlrcd glass rod. The ec;o+o vb*hq3u ljuree/6r. z+ lectroscope

  An originally neutral electroscope is grounded briefly while a positively ah/o 51 yfyyn(charged glass rod is held near it. After the glasy5 yyof n1/(has rod is removed, the electroscope

  A positive object touches a neutral elup)k f7bgtk (.w0t e-oectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to(wtg.k p7utke0-b o f) the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mebh(*jz n e 6ipu;fp1giic ,l7q09wt0a tallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path follow,; pbju *q6wleg 0zfc ia9iph7t01n(i ed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of thqw gss);.)bxedx d*lp( (z k6le Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The f0xp w5gh*ujm0 irst charge is larger in magnitw0muhx j0*g5 pude than the second charge.

  Sphere A carries a net charge and sphere B is neuig m7p.p (3y y-( jh-yvu;jitx -y gdqu;mr3y0tral. They are placed near each other on an insulated table. Which statement best describes the electrostatichr7vu xyqugy i0 ym(pyjdjy;3g- (m-;3-ti p. force between them?

  Two charged objects attract each oth:r w6l1g9h ha 4tqkoj4er with a certain force. If the charges on both objects are doubled wiro4qa:g6th h1j4 9 lkwth no change in separation, the force between them

  Two charges are separated by a distance d and exert muts5k)pb s6 jux:) ffj9r5 7irojual attractive forces of F on each other. If the charges are 56pj9 f x) f:os7rrsiuj)5 kbjseparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What s120t sipqtqe-wv:: n happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance-sivw0p1s q:e2qn: t t between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton adq c4/jz kz trcxcy27,ewl+p (;h 5co5re separated by a distance of 1.0 m. What happens to the magnitude of the 2ccdl /4k,5 r cw;c(oy5ex7+jzhtp qz force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens+f5uyw vpi,o+3a*.v yqy c zey;8a1jd to the magnitude of the force on the first electron if a second electron iu3v+5,y;.8vfj qpe*yyw+a a zd1i oycs placed next to the proton?

  An electron and a proton are separated b+g 0(;ktqrdq fy a distance of 1.0 m. What happens to the size of the force on t0qrt(qk;+ dgf he proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centerh5j 7zle7va)q of a square. When a second point charg)v7 j75 alqehze of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the k8 wqz,py9.5asbg0u acentroid of an equilateral triangle. When a secobagau ,kq 0z8.95wp synd charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is n :- jzky4s*w0x9k w1gwjq6 rehot a vector?

  At twice the distance from 5hk2yh4lg o,sa point charge, the strength of the electric field

  Is it possible to have a zero electri k s-y 8;v8ns,ysq3tccc field value between a negative and positive charge along the line joining the two charg, qsvcnsy;-8cy 3ks8 tes?

  Is it possible to have a zero electric field value between two po u+ln uq8g8,wksitive charges along the line joining +ukgwn,8ulq8 the two charges?

  Electric field lines near psitiv,zsjj5vm g gk8w2w75p e point charges

  The electric field shor;fu sv7vv6 2oq pzs )gx/gh7 wn28d:own

  Can electric field lines interseccte4qgsx/s+0 vgg i72t in free space?

  A solid block of metal in electrostatic equilibrium is dzq- zn pfpam(t6+l;+(zdd g/placed in a uniform electric field. Give a statement concerning the elf+ zzd 6+alpngpm/(tq(;dz-d ectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaw m+e-zv,xnno; zo.dw1dm6*z ch given the same charge, thz wnwex -6;, +1dmz.v n*odzome electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wher9j h jrk7r/. nr7g)d3mrtpeam3ci,s5e a uniform electric field is drsi5/3)m pr tj, d.raer9jhn377 mcgkirected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an 6u,x+i b82doop va,d /o9u e3pmww;tl electric charge

  A positive point charge is enclcy64:-k tjxd8k 23mbd+ lh9ypr j7w hwosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere :yh62t yr+3l87pj- dmkjhkc9xwb w 4dhas

State three properties of - (yg+2icg 5:dv6afpt2v4syg ge8 umaconductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is 1jmc,)pex:6tjlppm7wfptv o1 :l2 h- $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a ne tk+svf545.x9cvafrb19cu f ot charge of +2.00 mC. How many more protons than electrons does this piece of plastic have?5vus 9xk 4b1 foafr t5c.+cf9v

  What is the charge on .*bq4gy. kk bi1 kg of protons?

  An atomic nucleus has a charge of 3of/g 4tzkxx f ;r/e)u$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge valug onpxrqpb 3x zi/z x0of2m*lxp2-30 1es of 2.0 and -4.0 mC, respectively. What is the magnitude of tho0o rm*n q z2 0lpx 3-2bzxigx1pxpf3/e electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweensek9 +8dmdukb y- j4z1 them is 1.0 N. What is the mag8-kzy d4bjmd s9k 1eu+nitude of the second charge?

  Two 1.0-C charges hav as/t)1;j rnige a force between them of 1.0 N. How far apart are they?

  The force between a jf0g -tz0 j t. 1m;;zeaj1bidb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm on,3f nt-,jm rapart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the ele- , t,n3fmnorjctric force between them?

  Three identical point charges of 2.0 mC arob pt7gp0 ()tve placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic f()bopt 7pgt v0orce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC isil : tr9+bvq9c placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at q:v+lic9rb9t the origin?

  Three point charges are located at the follo:dpnn.ah- s5v2g i3qcwing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00n 2vh gpsd .3ciq-:a5n mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centeri/zklc, d+32oh(n goy of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center char+(3 cnodyhz/oi2kg l, ge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, hq6l o+;,q gwau*m,mi 0.10 m); Q3 = 5.0 nC is at (0, 0). Whaql,u+om hi;w*m,6 qg at is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2v8w(yh5 )3m nl3u2ze fxwhn 9v = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).hz 3lh52 nn8( f yvuv3)exw9wm What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the p:2duv 6s(inka p (wi:vertices of an equilateral triangle which measures 30 cm on a side. What is the magnippk(6 i2d(siv :nau:wtude of the electrostatic force which acts on any one of the charges?

  Consider point charges jwi7o;y,ofwd6 emw 0i 08b(ppof +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two cow e 7 i, (86wb0jiyfowdpm0;pharges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x7ur2 lenru6bx 4a (:uo = 4.0 m. Where on the x-axis can a thir uunru:62xborlea7 4( d charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placevq5w*4oet)r z kyoie(q;k x)duk 8i y4:bm/.pd at x = 2a. Where can a third positive charg kit4r/edbyoyz)eop qk;8 iw. 45*:qx( km u)ve +q be placed so that the force on it is zero?

  A copper penny has a mass ofzqbt ;il3 fh-(gdp (.v 3.0 g. A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up against the force of g:c4 fw.9xaah95avenc72* cmb u8ie efravity by the attraction of a fixed proton some distance above it. Ho2hvae9.a7i*w9nx u5becfcfme 4 c8a :w far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nox:srf .oczt 8 +us0fb+4pl( gsnconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unt+:sr(o0l4 .u zfx 8f+gtp bcssil the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the ma2alih t5-9yip gnitude of the electric field at a distance of 1.0 m frtia9 ph y-i2l5om the nucleus?

  What are the magnitude and direction of hg c/x7d3lob:q(1f7b+z y aavthe electric field at a distance of 1.50 m from a 50.0-nC b +oac1qf7l agvhy/3: x7z(bdcharge?

  A 5.0-C charge is 10 m from a small t4u/j6 j k.q .faw4dnx(k re*ruest charge. What is the magnitude of the electe(* r ka6uxf q4.wjr dkunj/4.ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th 3vqnqptqszf5kct2 xpkg+0 57// bcu:e electric field?2ptt 5v 3b+ q /cnsxgu/q:zf57kk0cp q

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude b 8uw0w 653bafkvna0fof the force experienced3b0fwfwun5a vk8a6 0b by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each h 4 ve+o)to1jz3ffick6ave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges?1 o3it)c4f+z kf vjo6e

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 ;q9ab08w pi*sy .kaql mC charge is placed at the 50 cm mark. What is the electric fqliqyp a. 0a*s;89b wkield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC uwt+841 )mgq0grqn mb charge is placed at the 50 cm mark. At what point on a line joining the two chawn4m)0 +8qgt1r mugbq rges is the electric field zero?

  Two point charges of +3.0 mC and i-q-twr d6jo- -7.0 mC are placed at x = 0 and x = 0.20 m. Whatt -i6r-jq -dwo is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the t -naq b,a-ck yno3/4qbhree corners of a square of side 0.50 m. The last cqn4 ,3a/cb -qa-o knyborner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placeb9kr2h w tiv+)d at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electr+t vbw h2kr9i)ic field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when itxn07m*4w , lo zl5c xcd;vq5uu is placed in a uniform electric field. What is the mad* ;uvcm5 7,lcozu0xxn 5lqw 4gnitude of this electric field?

  A particle with a charge of q px sf/6wl/sma /cs4viok1 s2x+*l(w4.0 mC has a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass dqv7v,,-vyr7xu ipyb0omio8 tn)r +9 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for,b9p8r-u i7n+tvvox rvyq0 y)i o7d,m it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC 1bjsf)6mfd-mx/ta0 v . The ball is placed inside a uniform electric field, and is sf b-6f t1)vj0ma/m dxsuspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of2 (y)y9njv5dk o, a1 ahv6ovcf +2.0 mC. What is the magnitude ofcnv2( f ,oh 95yao)61da jyvkv the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e gq6q;bmos 2l5b+f ,jelectric field 6.0 cm from the center of the 5b+q 2g;oe j6lqf sbm,sphere?