State the law of cons3 oa3rdi:(j x se-f g-ncjt44hervation of electric charge.

  Is it possible for two negative charges to attract each othufmfa)0 dkun)7g1 y) per?

  Is it possible for a pzd tb 9m*dvh v*0b nhk+-wd3;nositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During t9k sfm2kfb83x l()nn;j)xq -km : niukhe process the glass rod acquires a positiv kn (q)u:x83 2xkmffnmjlni); b sk-k9e charge and the silk

  A proton carries a

  The model of the atom 0(8dmenaqj)w shows a

  A neutral atom always has.ch a uk)zz,(8orlu8b

  An atom has more electrons j7hx+ r *.h:rnkj csq.than protons. The atom is

  Materials in which the electroeot;zu-b ene2wfh4* .ns are bound very tightly to the nuclei are referr-eehub;e4of* wzn 2.ted to as

  Materials in which the electrons are bound very loosely to the nuclei ul1ld p7 p.*gfand can move about freely within the matergll.dp * pf1u7ial are referred to as

  A negatively charged rjzh9* vt6okh, od is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged o6, h9*hzt jvkrod will be charged

  Sphere A carries a net positive charge, and sphere B is negs+:0e2 ocb.w udzj +butral. They are placed near each other on an insulated table. wcgej0 dbub.o+2zs: + Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posisx dnl-uu )(2mtively?

  An originally neutral electroscope is briefly touched with a positively chargedcfwu:z fl ;7b8 glass rod. The f8w z7b:lucf; electroscope

  An originally neutral electroscope is grounded briefly while a positl. tuhsp+*,;x iv:o izively charged glass rod is held near+* o x,ip. u:isltzh;v it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the ls -fbka-h8/*.q6kf lq ktu g+:ylrii5eaves separate. Then a negative object is brought near the electroscope, but does not touch58lu +alib-q:.f-tkk qsk r/*gh6 iyf it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neu81b :4f)dqmzd aml1 ml 2ni;yotral 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 ball, and stops. The first ball rolls forward,) n yl:4qildb o1mda2;zmmf18 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 theq 9 .b7c0h s6s1r:tg.wdnrbzj Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larg, xwvhe:sl: yu4 m.2eser in magnitude than the second chas y,veshe:w 2:lmux4 .rge.

  Sphere A carries a net charge and sphere B is neu;,yd.mej n o* :-rtvhmtral. They are placed near each other on an insulated table. v -mt;e,dyrm*:o n.hj Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ch m3 q0rmbju.*sarges on both objects are doubled with no change in sep. bmmr* qsj03uaration, the force between them

  Two charges are separated by a distance d and exert mutualz 9 sgvxi6x9i5 attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new muts zxii 6x59v9gual forces?

  Two charged objects attract each +l9o nkz q9c14oo-6wth qu5a)p g f9ooother with a force F. What happens to the force between them if one charge is doubled, the other kq9toq a 59o+19pufl-wnc goo z)4oh6 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 ar 19 98zavmg4f(yw:.n ktx5vel x(qr ase separated by a distance of 1.0 m. What happens to txw zt4 ke(q vlxg.y5 :(nv8m99ra1saf he magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sik f6gh5fo rh8 cve+bie29/ 4xeparated by a distance of 1.0 m. What happens to the magn/bfi +gk592oef8 x6 4r hhviceitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are a 82t+8c8k cehhksw+5n +nablseparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is mk takn2 5aelwnch+sc 8+ 8b+h8oved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a1k rn0/rmx dqui9w p:9 square. When a second point charge of -Q is placed at one of the square's corners, it is observed that a kxwpmi1u 0rndr:9/9 qn 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 centroid of an equilateral trian5bpbnnu hregk , m*b:9m(5mr* gle. When a second charge of +Q is p5*begn m m(ubpk: rm59*r,bhn laced 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 not a vecucb8z 5phf)7 jtor?

  At twice the distance from a point charge, the strength of the electric fiel yht)-kixzx. n1 d*fo3d

  Is it possible to have a zero el9k1 aqtfz76/,:hfuxw u;ndrbectric field value between a negative and positive charge along the line joining the two c/utzkr;uhwqa,: 1f 79df b nx6harges?

  Is it possible to have a zer t*znpsxd1 4k4o electric field value between two positive charges along the line joining the two chargeszs *k1ndtpx4 4?

  Electric field lines near psitive poin bb h,en pp5lgf-) ed-xne4s8.t charges

  The electric field showpi8d (0 1*ag3cimmfkdt 5/eoen

  Can electric field lines intersect in free .z s4i 22ku .2bspzik ,.zymzcspace?

  A solid block of metalxr kzhs16 o-owb4z;s9 in electrostatic equilibrium is placed in a uniform electric field. Give ak-1;4s zo b 9wsrhoxz6 statement concerning the electric field in the block's interior.

  If a solid metal sphere and a holl( /15xucv*5eb+gyde(qb b6i w/4ytc gortrq8ow metal sphere of equal diameters are each given the same chwqt 4ybxo/(i56 vbcgugey(er1qbd*t c58+ /rarge, the electric field (E) midway between the center and the surface is

  A cubic block of alumilyb: 7hl;,e.mgh g b,bnum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top: ,yl .,;bebbm hghlg7 surface?

  If a conductor is in electrostatic equilibrium nv85umc eer7 ic(cw* . .div:jlear an electric charge

  A positive point charge is enclosed in a hollow exi c8w7m7lu5metallic sphere that is grounded. As compared to the case without the hollow sphere, the elec xcl77muw8ie 5tric field at a point directly above the hollow sphere has

State three properties of conductors in static equirmz6e4yk1o k7 -ayx. llibrium.

State Gauss's law.

  The charge carried by one electron i9fmx2 n s 5ntiy+wp5d9, r9hgys $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of+tcot;r km(c8 +2.00 mC. How many more protons than electrons does+;ormc t8k (tc this piece of plastic have?

  What is the charge on 1 kg wzap30,) dn pu61wdli 8sl er/knu-4rof protons?

  An atomic nucleus has a charge otot tt0l(- cq9f $+40e$. 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 2.0v5/gb gf e.;cil6f.xn and -4.0 mC, respectively./fcibx6.f;5egvl .n g What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second+-kbd;nku h/w charge, and the force between them is 1.0 N. What is thekk+ hbu /-nd;w magnitude of the second charge?

  Two 1.0-C charges have a force unyf 5gf sj0*pn e(h 9:v 7zt)vdg.,nmbetween them of 1.0 N. How far apart are they?

  The force between a q5 ccs/n684kznzcv.z$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 ydogp6x l o516cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elgp1 ood5yl66xectric force between them?

  Three identical point charges of 2.0 mC gpb* mc8+ bbv:are 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 1:cm*b bbpv 8+g00 cm mark. What are 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. novzdw l, ft/fya6e.9s2.u t 3 A charge 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 charge tn6u,az 9 eldf2wv/o.fs3 y t.at the origin?

  Three point charges are located at th,0r yqnfhx/a gwyl*5b 0z *u7ve following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00bu05 xn7q/y yaw*0r*lzv gf, h m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Qjcd:c2m r,,sju.q 3ix/c(dvo is placed at 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 thes vic cjxmqjd3,.drco:(u/,2 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, f3(19l ny+y79f v2uksmiez2 vqx n4kh0.10 m); Q3 = 5.0 nC is at (0, 0). What +9yf 4l1 nz3fi79eumkqkxn yv2hv2 s(is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0oij o03-m/kfu0a lx;j.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0o lfu mo;x0a/k j-3ji0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mtl/m8)ivs3 hf)m ;kl k5u v0egC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forcll v guv5 mk8tm0/3sfhk e))i;e which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what l0ib,.ww j+oi c 2n6hgpoint, on a line between the two charges, would it be possible to place a cha2 j,i.6ciwwo bng +0lhrge 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 xvp+7e 4o:wop= 4.0 m. Where on the x-axis can a third charge be placed so the net force o7e p woxv4+:pon it is zero?

  Charge +2q is placed ail scy o:kqqpesn)xy4 n;,x/ d9p78c5t the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that theq9cinnxd 5pk8:xq4ls7p)y ,e co /y;s force on it is zero?

  A copper penny has a mass of 3.0 g. nvl/ pm , esm/:.yyr0vA 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 agains piqf8i0j p 3z-)xvl(yt the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pri)j0vpy8xl pf(- 3z iqoton?

  Two 0.20-g metal spheres are hung from6t*fc rt nbi;bw:a7j7 a common point by nonconducting threads which are 30 cm long. Both j ;ca6:bnfti7b7 w rt*are given identical charges, and the electrostatic repulsion forces them apart until 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 magnitudeu m;tm e)p:l f*9rqxw9 of the electric field at a distance of 1.0 m from fxmr :u9*9mwp)qtl;ethe nucleus?

  What are the magnitude and direction of the electric field atrd,jji pv86ng(rkrc393 x fe * a distance of 1.50 m from a 50.p3 j gc,6r 8jkf 9nri*(dvx3er0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude on+)d8l5ehwc,cwwi1 nas0wf2 f the electric field at the locatio5il,wc2 d+s n nw10fh)w8c aewn of the test charge?

  A 5.0-C charge is 10 m from a smar amv1vqwze :y;*v22n z691xdy. vhkdll test charge. What is the direction of the electric field?d1nm avvz* ye22z v.vh;9r6 yd:qkx1w

  A 5.0-C charge is 10 m from a small test charge. Wme;t v)i /apm1hat is the magnitude of the force experienced by a 1.0 nC charge placed at /tvep1 ia);mmthe location of the test charge?

  Two point charges each have a value of 3.0 C c2c op:8h7.z3+t zwuhib1bwjand are separated by a distance of 4.0 m. What is the electric field at a point midwajh:7p1 i3 hz2bt +owc.z8 bcwuy between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c b 5rx.fmmnd)e1ssv z,/ pe9i3harge is placed at the 50 cm mark. What is the electric field at the 30 ceds5x s 9p1e)z/f,.3nvm rbmim mark?

  A 5.0-mC charge is plac*odan j9 cb7wf mx.(0bed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed bbox 7d 0wc.*mnaf9(jat the 50 cm mark. 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 ae.jb7s shw *j*fetk)8 nd x = 0.20 m. What is the magnitude of the electric field at the point midway betweejbs h*e7je8.t* )wkfsn them?

  Three 3.0 mC charges are at the thyy9oyc. ef;,x 5bjz;i60jlzh wu0 rw(ree corners of a square of side 0.50 m. The last corner is occupiede.6rolhyzwx 5c;0jjwbzfy( 9 0 uiy ,; 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 placed at the coxe a1;5z- y. ovh7pbtgrners 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 electri.o1b5-y7exp gth;avz c field at the square's center?

  A force of 10 N acts on a charge of 5.0 mm-sg4j+ :vs54euxa* aez;: msxj i 3jhC when it is placed in a uniform electric field. What is the magnitude of this electric fiszjxsg 4ehsjjm-v:ixe 5 *a4m3 :a;+ ueld?

  A particle with a charge of 4.0 mC has jax jp7k82 mygny pgknb88* 1o67goa)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 y3(sh;: egxa38g.kqf 2jtpizis placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the (ph2zg q;x .:aiy kgs83t3 fjeball for it to be suspended?

  A foam ball of mass 0.17axt*dbvkw a2cqym97 zinl3t ,m6 +a650 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the forcbamki c2 yn 9x366maz*lqa,tdwv7t +7e of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cyh) q+n uqo/z1m carries a charge of +2.0 mC. What is the magnitude of the electric fieq zn+yu /ho)1qld 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 th;-yy(f xibhbtg:.; 7 atia f)ee electric field 6.0 tgbta ;hb ax-iei(. y);7 :yffcm from the center of the sphere?