State the law of conservation of electric ch ts; bo*rbbj q-bxc08:arge.

  Is it possible for two negative charges to attrh4nafpyn3 *, :6mwxnt,z5 .sgpdso0 l act each other?

  Is it possible for a positivc1itmcs1 +m9l e and a negative charge to attract each other?

  A glass rod is rubbed with a piece ofmyu 6i( 8w;apheb 6uh*u(kl4o silk. During the process the glass rod acquires a positivu(h(m w*ep6 u aoyilb84;ku6he charge and the silk

  A proton carries a

  The model of the atom shor;oowu7s 1 iusq* ttp2 3l2tb9ws a

  A neutral atom always 27vth 79tg-e uuvf*y6gnz/g 3yyo.,irqq )u dhas

  An atom has more electrons than protons. Th.q((lafgve8xgp, ,g c e atom is

  Materials in which the electrons are bound very tightly to the nuclei are rb63p;+8lkc cvdr: apcy8l5zreferred to as8+:bv;zycr5lcpkd 8 3r6 cla p

  Materials in which the ezr-4vaw1* v lllectrons are bound very loosely to the nuclei and can move about freely within the materia*- 1 lr4wlvazvl are referred to as

  A negatively charged rod is brought near one end of an pbrec 55d+2ck uncharged metal bar. The end of the metal bar farthest from the charbdc+kp5r 5ce 2ged rod will be charged

  Sphere A carries a net positiv q zevf)9b.uq1e charge, and sphere B is neutral. They are placed near each other on an insulated table.fvqzb e9 ).q1u Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cha ye-dge1me 2 1w7kn:umrge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pov,r u 0pp2k8;t;wm tvjsitively charged ;2r;mp0 w8pjv ,tkuvt glass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posc)9b lbvf pqvi51 t6e6itively charged glass rod is held near it. After the glass rod is removed,9i pfb6b1 )vq5et6 clv the electroscope

  A positive object touch:xuhb3v ,gs95u3tos0 3imevj es a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves3v5sb 0 :9v useihxo3 gm3jtu,?

  A large negatively charged object is5/ihmm1 uc ap- 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, strikes the first balcm/ 1i-haum p5l, 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 the Coulomb consnqd cqxph*.4 h7c+ht) tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance m5a.o 4 igy ivq9qa2)x) z7 n./xvoggfd. The first charge is larger in magiqnv5gqxa)2a.myg go).z 9i v7ox/4fnitude than the second charge.

  Sphere A carries a net charge and sphere B is u s:0ogsf/(nvneutral. They are placed near each other on an insulated table. Which statement best describes the electrosta sguvf0: s/(ontic force between them?

  Two charged objects attract emh:xan5kn5u. ;66n.d iimhev+flh 9fach other with a certain force. If the charges on both objeci.d5m mhh u5:a f6nn.6lnvfh9x;eki +ts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive/hcpo4 : 6f39nakw*wut tx,lf forces of F on each other. If the charges are separated by a ditt3,f:9awp l6x/o4kuc w n* fhstance of d/3, what are the new mutual forces?

  Two charged objects attract pdf2)6s gjkz7 v.pq t7each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between s27 q t6zfd7.)pjv gpktheir centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sepa57c bfs1+od pzrated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron i sf+5b odz17pcs placed next to the first electron?

  An electron and a proton rds,dzu 1a9 j35b9ct jare separated by a distance of 1.0 m. What happens to tj9c3 rjd ,bz1t5d sa9uhe magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separaj;-84 tjffy orn-ls k5ted by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to thejsnlfy kr4- foj-85t; proton?

  A point charge of +Q is placed at the (ck2qx4j2(2pv p3+xwwjwnj bcenter of a square. When a second point charge 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 enk4cwxw qp(xjw22 2 b +(jjvp3lectrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is 36*ublspn/ iiv5 orl:placed at 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 n3lbs o:/iil* ur5v p6the 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 not a *oi-rzp)6k n z )s3czzvector?

  At twice the distance from a point charge, the strength of the ele9yq6o0 iyg .ehnfh5x 4ctric field

  Is it possible to have a zero electric fielw)5esmb an+b *d value between a negative and positive charge along the 5)bmnsw+a e b*line joining the two charges?

  Is it possible to have a zero electric field valuhqy v0s-q561 gtrle;ye between two positive charges alo- 0s;6qetv yqr yl15ghng the line joining the two charges?

  Electric field lines near psitivevuy-gjck9rhq2 u 0o1, point charges

  The electric field showor t(h60hm mt3n

  Can electric field lines intersect in free spacecty 8or29 ubb-?

  A solid block of metal in electrostatic equilibr+upzs0bud;10t m /nr dium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiou;+ u/bd0d0npm z1 srtr.

  If a solid metal sphere and a hollow metal sphere of equal diamet jw olk,fmu0aj4q:2gd q4 a29z g(dtdks,kd8) ers are each given the same charge, the electric field (E) mi2kw,,8g q dk9j(tjzq4ma0 lgda2o dd 4u) fs:kdway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in afjm1a f ;ci3szr 0kj8(.dyd .a region where a uniform electric field is directed straight ujf 801;az j.fd(yad3c i ms.rkpward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chaapbm6z2zm6d ,iq80, xcg*t nsrge

  A positive point charge is enclosed i) 600f cyvouzxn a hollow metallic sphere that is grounded. As compared to the case without the hollow sph0voyzu 60)fxc ere, the electric field at a point directly above the hollow sphere has

State three properties d7/k k 8boeu-g7) mcgfof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electro+c89z :6botl 7zuy1 a izbiab3n 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 has a net charge of +2.00 mC. How many more protons thah-m; h9*kma een electrons does th-mae* h9;e khmis piece of plastic have?

  What is the charge on 1pp 4pjiq-y8/a*h- vl c kg of protons?

  An atomic nucleus has a charwj 5s b uvma9391eljd1ge 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 cjvta-bs.jld b,4+ z 1vm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force ba.z bt ,b sv-j4+1vjldetween them?

  A 1.0-C charge is 15 m from a xe-1cin-6e hvxr jlkw ;28tb7second charge, and the force between them is 1.0 N. 8vxc67wike -n e;l2 1rtjxb-h What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. k 4v 34xcv8rj)q- xk 9um3frha How far apart are they?

  The force between a xh (lduq/je ao o9 xq/.7u:pr-$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i1 0idhl kvx9n4nitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what 0 dlx4n1v hi9kis the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Tn,3yq0qt,m5hdg(;jfg yjeg/ 7 bvj4ghe 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 ar b;yyfh73nt5,e(j/d 0 gvj qgjgg,q4me the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge oa0t o5 8 i5dqb6+ihephf +2.0 mC is placed at the origin, -2.0 m C to the i06 ph edaoqh8+55ibtright 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 the origin?

  Three point charges are located at the following positions: Q1 =; cpetx5(zt 8*huqhc/g/g,u h 2.00 mC at x = 1.00 m; Q2 = 3.00 ep5*(cx8ghhu;/q,hg /tucz t 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 18:yt x -t-q+ nppqdivat the center 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 charge if a third charge of -Q is placed at the lower-lep:v +qt8yqix -- tnd1pft corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 xddtm37uy 3-iw5mwisi b-8z/= 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC ys m533xziwi7biu8 mw d- -/tdcharge?

  Q1 = 6.0 nC is at (0.30 m, 0);: e0 hda-2oaqy4 bas5d Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net foq:4d y5ao2e0 ahb -asdrce on the 5.0 nC charge?

  Three identical charges of 3.0 mCh0dct8m-.h 5ofetm1 q+fuo z - are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts.0 mct 1fuom -tz+fq8hh-doe5 on any one of the charges?

  Consider point charges of +Q and +6 oezum ioe))/4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possi oiez)u )/6moeble 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 = 4.0 m. Wherv 7e:n.h wd0u3,nav al)i+r.u+t eipqe on the x-axis can a third charge be placed so the nhniupv v q30+ lu,tw.ade: 7.)i e+arnet force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed abc2oxx m;; m*dz 2 a3xss7jd3/y 1l jngy4-cxxt x = 2a. Where can a third positive charge +q be placed so that 37;2dm - jyln ; z/cxsaxx4o*g sb 3c1mxdy2xjthe force on it is zero?

  A copper penny has a mass of 3.v f q869ezb-3d7zhgctqv eb(; 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 gravity by the attraction of a fid 8f ;r+x*2vzvuiyrw4b uhv23xed proton some dista8df4hu+u x2i vyrbv;wr2v z*3nce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are k51kv1 /hfwug hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle 51h1 gfvk wu/kbetween 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 b1kmlw2gy4tkg 7 i8c33ea5hm pe-1buelectric field at a distance of 1.0 m from the nkwy3hap l38e752k4 1 tb1emmcig u b-gucleus?

  What are the magnitude and direction of the electriqvo0 +pwm v85uc field at a distance of 1.50 m from a 50.0-nC char umop 0w8+v5qvge?

  A 5.0-C charge is 10 m from a small test charge. Wtweo 0ei 1uod6i-o1c 6hat is the magnitude of the ecewi6 0oit1deo6 1-oulectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whagy2mq/u ei(fli8u g60t is the direction of the e6e gyi/ql0u mfu2i8(glectric field?

  A 5.0-C charge is 10 m from a small test charge. Wha )8g8 ik(1emsq,q vnnkt is the magnitude of the force experienced by a 1.0 nC charge iv( nm ksqk,)8n eg8q1placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are s-a/miax 3n5g separated by a distance of 4.0 m. What is the electric field at a point midway i3ga/na x5s -mbetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of 0.idko9)o zxj1zf7i w a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What id kfxjoii.91z0woz7) s the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ay)hp-hve)1c i )- aijznd a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fievy)c )ha pi e)-z1-ihjld zero?

  Two point charges of +3.0 mC and -7.0j.2bdky h/4mv mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field 2kb .jdhy/v4 mat the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. :2ae1 kxpnc7v The last corner is occupied by a -3.0 mC charge. Find the electric field at the 1p7: ca nk2xevcenter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the co kp.h-hl/c ll;rners 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 electric field atklhp/hc ll- .; the square's center?

  A force of 10 N acts on a charge of 0ec mno2ynd-95.0 mC when it is placed in a uniform electric -ce y0m29ond nfield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mxiao,.uk nageoadc*3 ,f7y3 r k.47 voC 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 0.120 g is placed in a8p8v *m7uqx /msf ta)kes* )mon electric field of 6000 N/C pointing downward. What charge must be placed on the bals* )o mq* kea/x8pmv78u tfsm)l for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pl8p f ng7jo1n.raced inside a uniform electric field, and is suspended against the force of gravity. What are th.1p8j7f nngo re magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge ofv.yuv3ht (frflau8f7 rcjx60 e+ vn 09 +2.0 mC. What is the magnitude of th 3ajrr9uvce f8ufx6ylh0v07tf v (+n.e 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. Wf*; x;ji q.zqqbsn./ what is the electric field 6.0 cm from the center of the*;.qzi/. qsxnfjwq b; sphere?