State the law of consj.+iy4phju9z+b3 b 87sf ek5kf:pn gt ervation of electric charge.

  Is it possible for two n a;9eogri)( w(;czquw cd p(d2s3 t0hdegative charges to attract each other?

  Is it possible for a positive and a negative char0rhbh 3sfj*t :3 c9u,lomzah8ge to attract each other?

  A glass rod is rubbed with a pigxz.)ml-o f; hece of silk. During the process the glass rod acquires a positive charge and f-g hm)l;xo.z the silk

  A proton carries a

  The model of the atom f,dkc mrevd8k 3d -b) 1+ejai:shows a

  A neutral atom always hz6sig+5 ll7/p l5k m1ojw8 tooas

  An atom has more electrons thang95emxoq92vw protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei -zw f2*w ap52ciyy, 1mx6.lsb,a rzgdare referred t5silw6y 2zya,cm21*wzgd., afp xrb-o as

  Materials in which the electrons are bound very loosely to th* 7o0,qc+tj/ jsz wnlze nuclei and can move about freely within the material are q oj l,wt0zczn +7s/*jreferred to as

  A negatively charged rod is brought near one end of an uncharged metal bajn-;u) drd) -4;5dreun i pfvwr. The end of the met4d5ednr;rwp-; i)v-nf ) duujal bar farthest from the charged rod will be charged

  Sphere A carries a net positive 6m q )dozcdzj*9x( n6lcharge, 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 statement isj6 qnmdxz*o(c 9l6 z)d correct?

  How can a negatively charged rod charge an electrj7 ujkg5vqp(0; 2yio soscope positively?

  An originally neutral electroscope is briefly touched with a positive9lfqc4yy*+tj,-bi /nigk jf3ly charged glass rod. The electrosi 3 l ,qfty-bjgjy *nfk/49c+icope

  An originally neutral electroscope is grow7a e,wqqem40d5:gpem(te (2e mz7suunded briefly while a positively charged glass rod is held near it. Am(5 gewqqzet:a p ,eu72d4(e0e7wmmsfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves gu8 7sxo7 s-ucm8hlz2fc*y,tor./f yseparate. Then a negative object is brought near the electroscope, bog8cyc8 z7- f7 . r fy,omlsxs/h*tuu2ut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neut;xp5wgxk*nw. v t(v/c if vv8*ral metallic ball rolls straight toward the object, but stops before it touches v8/w5 pfv; x*(vkx.cv ng*wti 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, 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 q ;-(xjw.zd ukthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are kpn/xj98qy1t+ 5e gqc separated by a distance d. The first charge is larger in magnitude than the yp9nj1xqg5k/8 +e t qcsecond charge.

  Sphere A carries a net charge and sphere B is neutral. hi, bk6j 6zyulr-;sm0 They are placed near each other on an insulated table. Whic;606rz- siu,b kljmhyh statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certalc- f+66.gygiy tgae7 in force. If the charges on both objects are doubled with no change in separation, the 67 -+giyfet6 glcag .yforce between them

  Two charges are separated by a distance d and exert mutual attractive forces of xv c-23cbtk*il 0m)ti F on each other. If the charges are separated by a distance of d/3, what are the new mu-)btiltkimvc23 0*c xtual forces?

  Two charged objects attract each other with a forceq9xg(i.6 x i3 7z8otjfukp k-d F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force xq(-u pto9 dij8g7k 3f.z6kixis now equal to

  An electron and a proton are separated by a dsi 55sf(m2ho uistance of 1.0 m. What happens to the misf5um o52sh( agnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a pr:f( my bc/y b*z-dhx-foton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a secon * xb/d:h(y-mycff-zbd electron is placed next to the proton?

  An electron and a proton are separated 6kkz5a uj. i+nby a distance of 1.0 m. What happens to the size of the force on the proton if the +k5u.z aj ki6nelectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a s*7qg+jvwtazr43c e9 r econd 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, ide7at+rz wge*j49 vr3qcntical 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 + wo8x8- fm k /oo qh;/pj dvtlhgpu+*n(u,+afequilateral 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 chap+ g vpd+8h u8fklxmhn*f t/(woj;ao ,-o +uq/rge of +Q placed at one of the other vertices?

  Which of the following is o1eer 9kjms5b. 9g;qunot a vector?

  At twice the distance from a point charge, the strength of the electri+ uxf zeha4-g9q0x x/kc field

  Is it possible to have a zero electric field value between a negative and positj 73x q8et4jurive charge along the line joining the two cj4u8jeqxr3t7 harges?

  Is it possible to have a zero electric field val .,yffe7s;gdrkl )pigd1 rdt8* uv98z ue between two positive charges along the line joining r gk 7sptz;g 8,i*1)rflvdf.ude 89ydthe two charges?

  Electric field lines near psitive.j tjn b15bu*r point charges

  The electric field sho2wwm ko*w; g2-/jztv1d th, kjwn

  Can electric field lines inte 8c9sb ur;o4t,ot3d ndrsect in free space?

  A solid block of metalyk cm,h:9w e)4*khql x in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's intk4 hk lmywh9x)q,:c*eerior.

  If a solid metal sphere and a hollow metal sphere of equal diameterssbr:+;hu 1elh are each given the same charge, the electric field (E) midway bes:;he+hl r1ubtween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform++1zhsb)dtf06lj.tphb)c )abrz l.ckp/ j 7i electric field is directed straight upward. Whap ct.klpbzb60)jl+zb1st h)if 7/)h+ c.rdajt can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium1/n3uad ,pwvd3nx ( xh near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groujf.- iao88ma-z b:-azilf vh;nded. As compared to the case without the hollow sphere, the electric field at a point directly aba-zo8fifz m i;av hl.8b:-aj -ove the hollow sphere has

State three properties of condua0 kzv:ij.j.gvcfgc+) h,3db ctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is 1fz.kl4: v mxhbt- ; s,m9iznubos;(-yfyg+f $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has 216 lbwe.vz qf7fi+yda net charge of +2.00 mC. How many more protons than electrons does this piecee7vb+z6 yl qf1fdwi.2 of plastic have?

  What is the charge on 1 kg of protonf(jd /tf)a)3pql ,hul s?

  An atomic nucleus has a char64g7joxmk,+a z+a 93l plzg qrge 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 2.0yo+q88 gm7ve f)1riya and -4.0 mC, re a18m8o+iy7yqv rfe )gspectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1. 6gw82 z(ntihs0 N.ihz6 2g nstw(8 What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fe;8du;mrp /puc/n *blar apart are they?

  The force between a * dmtjg0. ,-wn 4dhapg$30 \; mC$ 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. If they aew1ekh 3 kg-c1re moved to a new separation of 8.0 cm, wke3-h1kegw c 1hat is the electric force between them?

  Three identical point charges of 2.0 mC are placed odqk54,py )pjdpjv u5;1trs)s n the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is )s51qrpj p4;t)up5 d sdky, jvat 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 placed on the x-axis. A charge y6q7y nuem7,9h;o 4u-xn tkgiof +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 y q6;77inehxoy tn 9uk-m ,gu4100 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 = 2.00 46 *)bxyfb2gkfv)bmr mC at x = 1.00 m; Q2 = 3.00 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 cr2vkbb6gfyb)m)* 4 xfharge?

  A point charge of +Q yjrt3,tjm6 25yqo4vn ( hci8d 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 magnit8cnrt3( yhti6dm,y4o jj2q v5ude 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 ojbng(s9x +/uk/5d)pk9 eeie6c*lty u*c/ tc); Q3 = 5.0 nC is at (0, 0). What is the magntcu yge/+l sek9*/(j ux59bk ni/eod)6c*cptitude of the 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 io9 eean*v yw+4fi 9)+ sqj:kmns at (0, 0). What is the direction of+)e9ko9 w+ fj inqney*vma4:s the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofwd)79mh; yp)hp shs2hs ;)jw jgo6ri/ an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which w)/jsy) 2sm9h g)rs jp6hiw o;7dph;hacts on any one of the charges?

  Consider point charges of +Q and +4Q, which t6aixv,n6t)m0)pe g g are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such thav ,)xe6tnpmgi6t) 0 gat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at :lt:1t ,ul ismthe origin and a +9.0-C charge is at x = 4.0 m. Where on the uml, t:tl1: six-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. .qf9x(d )z 84 yu b:imouqs+ndWhere can a third positive charge +q be placed so that the force on it is ze.s)dzo (8 fi uu:mnqbdx 4qy9+ro?

  A copper penny has a mass oqy xpbri 7-+:5btzv:3*lh0 qxgqo9 v tf 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 gravity by the attraction of a s1pthrbj61u k*au,g mf 123yrfixed proton some distancem hr3p *t1gky11ua,26bfs ru j above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thread tj 7z5icla:ei 44uug/s which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until iiu/ 4z ljgeauc475t: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 magnitude of the electri s o(+g1vh7t x/ y6m-glb:kqzwc field at a distance of 1.0 m s+kvq:/to m (gl76 bygw1-xhzfrom the nucleus?

  What are the magnituf ,ho*lhkqe cx 20aeb*w,7b *ede and direction of the electric field at a distance of 1.50 m from a 50.0-nC o wbe2a,c 0lhf ,eb**heq 7*kx charge?

  A 5.0-C charge is 10 m from akayhwe(q-6 f czapv-4k8 f5re5 sab 4j3y9ie3 small test charge. What is the magnitude of the electric field k3yaspe39z-erqac5fj f5i486k h4(ybe- a wv at the location of the test charge?

  A 5.0-C charge is 10 m from pm rs 5asx;yrea* x)(2a small test charge. What is the direction of the electric field*e 2ama r;(xpsr5xys) ?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude9fx.kmxhb+ y 3ie *h;l of the forck*.+9 heh3b x m;lfxiye experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.eey+hr0lj j7l -ax3u+*lf 4in0 C and are separated by a distance of 4.0 m. What is4ux7 lernj+jil0 lfe-y3 a+*h the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mamii30by8w :0hjgo*v x rk of a meter stick and a -4.0 mC charge is placed at the 50 cm ma o0yx3w v ihmjib*g:80rk. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the96aa s7bdfrq3wf(k,) as gnt9 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two char9(datb3rasnkq 7,gf sa6 9)f wges is the electric field zero?

  Two point charges of +3.0 rwq/u*+5r 6w-mwho le mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poqwr5*h+u lw rm-weo/6int midway between them?

  Three 3.0 mC charges are at the three cor+c0uclxb-n-i)rw vw8 ners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge.b c0 w+-wnvi)-ul8rxc Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges im xs3v j:*ol7are placed 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 electric field atx7:ovs3il jm* the square's center?

  A force of 10 N acts on a charge of 5.0 mC whkp +3-rhd drx4en it is placed in a uniform electric field. What is the magnitude of this electric fip+dhxr4r3k- d eld?

  A particle with a cha4 vniiho4x .f)rge of 4.0 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 masb y.o1: okv0u/sio*ej s 0.120 g is placed in an electric field of 6000 N/C pointing downward. Whatk:/.ou * osib0 jo1yve charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150*sj 5b5tm ib h55c/yad g carries a charge of -2.00 nC. The ball is placed inside a uniform hc mytsdb 5*5b/ija55electric field, and is suspended 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 of +2.0 mC. What is thek 8muin:xea2b c 9g)t22g2yfz magnitude of the electric field 5.0 cm fromym 8ga2tu9z2 b:g i2n)f xke2c the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the5arwsurb. 7; z electric field 6.0 cm from the cen.s z 5urb;7rwater of the sphere?