State the law of conservation of electwh lr. 984+1q*c a3nipsrtmdkric charge.

  Is it possible for two negative charges to attr,tm3 w tv0j1lxact each other?

  Is it possible for a positive and a negative charge to atpdj.gfdypx*:ezrkh)i (*6 .wr1;mk gtract each other?

  A glass rod is rubbed with a piece oi66ws+e w8vv tf silk. During the process the glass rod acquires a positive charge and the sil6is w6+v etw8vk

  A proton carries a

  The model of the atom syje 1 xz9 8sw17a8ugeahows a

  A neutral atom always hasx0rbb+- ec 5wbk+fd7t

  An atom has more ele,cfezc.kdgsgqx/k ; )g12w 7ictrons than protons. The atom is

  Materials in which the electrons are bound very tightly tsfd 168vx 9zr+cv6fzqo the nuclei are referreq6 zdr9c1xs+f6vz8fv d to as

  Materials in which the electrons are bohi 3w* ele95kuns,e0-zs*.isyl u mv :und very loosely to the nuclei and can move about freely within the material are referred ts l,9e.:sw k*-zve5 usiyei hul*0 nm3o as

  A negatively charged rod is brought near one en+r2chy l/wqd n,a6rk .d of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargd6aqch/y. + lr2,n rkwed

  Sphere A carries a net p+rb2-px fo vtv17 tx-nositive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briov v t-f1xntrx 72-p+befly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive3 lokolzoaam ::8d oi)8dc5i(ly?

  An originally neutralpde fe5fkn: h 6qok-f,*a4+jy electroscope is briefly touched with a positively charged glass rod. Theo,af k fk-5ep* 64y:d q+hfjen electroscope

  An originally neutral electr29v,trgkz/jl:;we o w8 wy*fh oscope is grounded briefly while a positively charged glas:2 8,/;owtwlvkrjyw 9gzeh*fs rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves s n zz+6p:x5xkrhk+m/l +tlua4eparate. Then a negative object is brought near t+lxx h5krpa4k nlm6+t :z u/z+he electroscope, but does not touch it. What happens to the leaves?

  A large negatively char:)w5patwnsi) ged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strnati s5:)p)ww ikes 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 o0e 3h vj3qchj:f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancax +ywcr3k /ecfob502e d. The first charge is larger in magnitude than the second charge. 2bc35fw y+xr ae0kco/

  Sphere A carries a no; wmaxqj-i2( ka m;3qcf,m.b et charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best descriwq mb;a .q2io3,mxac -mf ;(kjbes the electrostatic force between them?

  Two charged objects ad ;kx:eyaqi.4ttract each other with a certain force. If the charges on both objects are doubled with no change in separatia4kd:y;. qei xon, the force between them

  Two charges are separated by a distance d and exert mutua :x: eg9i zox6un**jnrl attractive forces of F on each other. If the charges are separated by a distanc*9ixjnrenxu *::g o6 ze of d/3, what are the new mutual forces?

  Two charged objects attract each other with alw;8kclh5f6 j (cyw m8 force F. What happens to the force between them if one charge ic(yk88hcw;l 5 m f6wjls doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens tos uqhfq78py(+ 6/ b6h/p ,eub,oggvfz the magnitude of the force on the proton if 6 (q pe uv6g,hhs/fgq,fp /ybzob8u+7a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W*lm/fl0dd ox 5hat happens to the magnitude of the force on the first electron if a lmfx5od0* d/l second electron is placed next to the proton?

  An electron and a proton are separated by a distancelu +92a:ozv 0zy+ulx s of 1.0 m. What happens to thelz0yul+a2:o zxv9+us size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a seco my4ic i8w8:2xxez;f qnd point charge of -Q is placed at one of the square's corners4qiy fie:88mzcx xw;2, 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 a c1qfn;qqf02w,(73tfj ; izoz k.k tzrt the centroid of an equilateral triangle. When a second 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 oj(,wtq.q iczro1z; 3nqk0f7zt f 2; kfther vertices?

  Which of the following is not a 1;mw7;obe7-dn t hzkg l, juy0vector?

  At twice the distance from a point charge, th+mvsrdq:4rolr9 1u2 tlz(k1xe strength of the electric field

  Is it possible to have a zero electric field 9/l 2cu.mtyjt value between a negative and positive charge a.u2ymjl tct9/long the line joining the two charges?

  Is it possible to have a zero electric field value between two positi6 nri gvv0ik./ve charges along the line joining thevgr.i 6v0kn/i two charges?

  Electric field lines near psitive point cp:sk-mp./ya 0e edng /hds /p6harges

  The electric field s9sun3:w6u+ - k+ lod)o b*iey whf2ewihown

  Can electric field lines intersect in8p,:1ce5udm o639 ik jblktth free space?

  A solid block of metal in electrostatic equilibrium is place ,.kapr1j hqn/fw;guic*l) n /d in a uniform electric field. Give a statement concerning the electric field g/n*;w rha cpnqiuklj1.)/f,in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gij;fk):pudy52h:vfa p+n u(wkven the same charge, the electric field (E k :fd h:;u2 kwjpyv+(5anu)fp) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region we7l8 u j:su /l3pt7)l m-shgoz7 1ml:0eq otnphere a uniform electric field is directed straight upward. What can be said con7utzhg0etl m1q/ 7lllp- pe8n:ssmu7oo j :3)cerning the charge on the block's top surface?

  If a conductor is in electrosta-vw aa1jt3h 3b+.ibqk tic equilibrium near an electric charge

  A positive point charge is enclosed in a )dmq qm)c :kv4y5mn dlr9 -i;mhollow metallic sphere that is grounded. As compared to the case without thm lkq qcyrd9:nm)5m;m)i-4dve hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium(3dey6 dy i u2r4l9thx.

State Gauss's law.

  The charge carried by one electrvi su68d4vq - jia*9ewon is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic hasdj uned3, 56ytn;qf 3*ux4zsr a net charge of +2.00 mC. How many more protons than electrons does this pitz f3 ;x ujn d35ry,us*nd64eqece of plastic have?

  What is the charge on 1 kg c.*5 fsrj qblxi1:5f*z8lsfa of protons?

  An atomic nucleus has a+ al.9dkdcv bn wtk+u;he+f/ , charge of $+40e$. 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 values of 2.58s: p x2sqtuj0 and -4.0 mC, respectively. What is the magnitude of th5s 8 tp2juq:xse electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them0/ dv n(tokfy; is 1.0 N. Whay;f( o/n tkvd0t is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?-eh y/fo2dtp. ; l-clg

  The force between a -sj5 spkjqbu4.rqh67;l d tk:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force.s-:*gscjeuhlyq y3. , If they are moved to a new separation of 8.0 cm, what is the electric force between jeq .y 3clgys*s,u h:-them?

  Three identical point charges of 2.0 mC are pm9bidi w:hp -ol r94u;laced 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 force which acts on the p9 id im b:h-lwr;9ou4charge at the origin?

  Three point charges are placed on the x-axis. A charpn 0es5307 l9tzljujmge of +2.0 mC is 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 chargej 9e mzs03ll705untpj at the origin?

  Three point charges are located at the following potkif,u usd .0:sg1 g5lsitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.ss,g gutukid5. 1fl 0:00 mC at x = 0; Q3 = -5.00 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 center of a square, and a second poin ok7 :l*m *gkiidfb,o-c-h7mnt charge of -Q is placed at the upper-left corner. It is observed that an electrosm:hb*kcodi-,fmgk 7o l7 n*-i tatic 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 charge 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, 0.10 m); Q3 = * ,dxp kozts1-5.0 nC is at (0, 0). What is the magnitude of thesp tzdxk-* o1, net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is a/x0t -bxnjj2q t (0, 0). What is the direction of the net force on the 5.0 nC char x0jtj2b -nxq/ge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq,-)he. j- g vpcupwkuk yp7sl3*pq,m5uilateral triangle which measures 30 cm on a side. What is the magnit l,p hgspy- 5pqc.3ev7ukj-wpmk,u* ) ude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wzbbk3 -:4le ;/wwdodi047mn6wuyvhb*q dc +shat point, on a line between the two chahd :4i/ubzbykdle wdbvcw -o30 wn+* q67m; 4srges, 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 x = 4.0xy+qrfgis.rl +*x1 mc , (.aye m. Where on the x-axis can a third charge be xc+g y.,mar. y 1fx*le(qrs+i placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qvioz:vlu ii4lk/fas 3gym-1+9a71,ijt a1o v is placed at x = 2a. Where can a third positive char7/,9y1 igosvzj+ 1:tii3 lamo-af4i1v ukval ge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to1bium 1 qd:ik/tal 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 gr6 p/wxy)o ci+ 6.anwegavity by the attraction of a fixed proton some distance above it. How far above thei/xwoe66y.wp+ cg a n) electron is the proton?

  Two 0.20-g metal spheres are hung from a c7seq-vxt01-7bqdmqq eoy/q 0 ommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle 1qoqm0y-v x eq0bqt7-se7/dqbetween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the g ahh,5sub/4o electric field at a distance of 1.0 m from the nucleusab/5 ,4hshguo?

  What are the magnitude and direction of the electric field at a distance 3awdr j r hef+p7.g,qah53zr3r +d dfi.3f:w jof 1.50 m frdhra ,+ j3 eq djrizwf3p f53rwhdfr:a73+g..om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of w2,9zo dxda-x the electric field at the location of thxx9a2dd zw ,-oe test charge?

  A 5.0-C charge is 10 m from a small test charge. -t0(pe qunwyvdzi27iw p1;z 9 What is the direction of the electric field?9vqzu n0p 71(d;zwy-w2pi iet

  A 5.0-C charge is 10 m from a uy(6 u,9n5+q2;fe t vb.pg0qte wclknsmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test 5qgnpwtc(2+ybuet, 96 ;kfeq0 .l vnucharge?

  Two point charges each have 1j ivnj 1ro,:oa value of 3.0 C and are separated by a distance of 4.0 m. What is the r vo1ijn :,jo1electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cg2 vklcc5at55ch o-+t m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielcokl5tahtc-v+c g2 55 d at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4viy.w rse )n)g6a,y/k.0 mC charge is placed at the 50 cm mary.)y/ es6i,w nk)a gvrk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Whxot,v / 3fyzz9at is the magnitude of the electric f3o vx9yzt ,/zfield at the point midway between them?

  Three 3.0 mC charges are am8vy0j:2s ;ymhy tzm5) m cgf)c5lu6v t the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at vmm6z2y)05j;) m t cv8:myslgfuhyc 5 the center of the square.

  Consider a square which is 1.0 m on a side. Charges are v2asdfn j(m gd;r9 8li8 o/-jdplaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at o2 g9s;f(m jjln/vd8d8 iad r-(1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed fr3m( kv, -yfdin a uniform electric field. W- fvr kyf(,d3mhat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of y t3w4tqcig+j;m.lt do6-hu5$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C mskgb-am5(/dubc*. g b*bh r. pointing downward. What charge must be placed on the rabhg5s( u*.b bk.bg*/-mdmc ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The b:, a2ppvj) 4x/djxkrs7p b0 jyall is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of thejr4kb:jj xpsv2),a0yx/7 p d p electric field?

  A metal sphere of radiur-l p nht53q1qs 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 t 5qlr-3qnph 1cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a 4h c1kduig ..jcharge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphered1gk4hjuic. .?