State the law of conservation of electrigl.c+ 4ure8x;p rq od4c charge.

  Is it possible for two negative chary4 hcl2hkj*p9ges to attract each other?

  Is it possible for a positive and a negative charge to attract each0klr h:p ;nhzgn5)pim u /j7)t other?

  A glass rod is rubbed with a piece of sib/:z5u yia qn5lk. During the process the glass rod acquires a positive charge and t any5q:i /zub5he silk

  A proton carries a

  The model of the atomspoj u3gxaey80pf (47xx- n 5f shows a

  A neutral atom alwaysfum83 k7l ka4atsn ztjd5h:6 5tzv5t 6 has

  An atom has more electrons than protons. The afg3nk*:9 g,s;zwp zx vtom is

  Materials in which the electrons are bound very tightly to the nuclei aregl2z pb,k 1o;zm2hue+ referred2pl,g; hzm u21eo+b zk to as

  Materials in which the electrons are bound very loosely toy++ vd8)owo8g cp g)h0c8d0 sz- y-ep)gjtjlr the nuclei and can move about freely within the may8w) )jgy- de0gph v 8-lcpgo0+rjzdc)8 sot+terial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. iq bplv:g(bm:hea 3 uy*x :sazpa48/0The end of the metal bar farthest from the charged rod will be charguvspp a/bal3( ezg::*q:hixa b 0ym84ed

  Sphere A carries a net posbi5gb 34x8(em; dfuoijsdv:en/0 j u5o+kx h.itive charge, and sphere B is neutral. They are placed near each other on an insulated t j5g+o;x db f/ :3ehn 8k(iibo5jxvs4em u0.duable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged r h0fek7o8 +j(yy ta4j echo6r5od charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a hxk2f;fa c gwto5f/8bb2xfa /j5 m6g)positively charged glass rod o5g ffhw)5bk/cg/ bxxaf2 ;j mt28f6a. The electroscope

  An originally neutral electroscope is gro.mi s 5(fp)zn**,sj0wsk(a8 ,gcy8b acmba squnded briefly while a positively charged glass roc a5a 8 gns k*(8isy) s(bb,jfawsz.0,pq *mmcd is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavehd17a ljm7 t1jax2t0 cs separate. Then a negative object is brought near the electroscope, but doel 2m1jdxc7a7 0ta th1js not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated t 65lic7x+g-fhk2a 2oo 9,zb lh)yehghable. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls h2o hy2hhex7-a+gl6oikl ),bfc z95 galong 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 the Cexrucn *r+vw9poe 6 80oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeylx8;w-5cgpbx. zz *e/rzn r - is larger in magnitud/ xyb *n;z58rzezrwc -x lpg-.e than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ea. bspxwfbde,j:p 0bvuu ):; ayl(k:(gch other on an insulated table. Which sw p,s:ug .a )l :ujbxvp:0df;be b((yktatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain foriw 7 oufdow qc:-0v;s2ce. If the charges on both objects iqow-ufw2 :s0v 7;doc are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual ap/pc 3ed 6q2i)yf (rcottractive forces of F on each other. If the charges are separated by a distance of d/3, what p/r)c2py3fd6 ioc ( qeare the new mutual forces?

  Two charged objects attract each other withmw8v vqk3s7 2t5leq;n 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 tqtn7ewk 35vm ;l28sqvheir 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 129t/elo33 7nwuf/x+lbld npj.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to thnnx 7fl/93l/ob2ld+jutwp3ee first electron?

  An electron and a proton are separated by a distance of 1.0 m. What zr+ o-tza*1y nhappens to the magnitude of the force* nyzz-trao1 + on the first electron if a second electron is placed next to the proton?

  An electron and a protd /9,fb8uzcij on are separated by a distance of 1.0 m. What happens to the size of the force on the proton if th d/8bfji uz,c9e electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squa m*x p 3wl/e/,-th5ffi8zgmj are. 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 sq5z*jtfh-i /ag m,3wef m/ x8lpuare'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 th-1tfk*yr5 j uxe centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triak -rj1t *5fxyungle'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 i)ajqh -9tuf(0l me ek1bo ny/u7bdl( /s not a vector?

  At twice the distance from a poipfm sh,/ 6pzh*;wb3prnt charge, the strength of the electric field

  Is it possible to have a zero electri u4 67mfsp0px gdk)w)lc field value between a negative and positive charge alon07s )6 mufwgk)4px lpdg the line joining the two charges?

  Is it possible to have a zero electric oe9jhas26y370a ( lipwhavj; nep5r7field value between two positive charges along the line joining the two9oliha32vy rea (6w77ej5h 0pnpa; sj charges?

  Electric field lines near psitive poipo xpyfu0( 4--tcft6 unt charges

  The electric field sh9u q5jwf, 6l ckx.ydgxcti643own

  Can electric field lines intersect in free space u(/dm7 yowd.odbplc gsd/nsl/;31 b0?

  A solid block of metal in electrostatic equilibrium is 3p nc7dca- 43:fd8pgq rdcv8azd(ha 0placed in a uniform electrin 8dpr -dc4a(:8 3fhc3p7va dzad0 gcqc field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi8u.huxe.wf 2d hc8j)p)kfd b 2ven the same charge, the electric fi.hx8jecd2 )u)db.p 2kwh8fu feld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodek..2ocj.z8 rbq35zkh h, gdrvn table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block dvrohb2hk3,c..zkz5 gqjr.8's top surface?

  If a conductor is in ele;t;/1.hsf edt*jrp(/mnqu ax ctrostatic equilibrium near an electric charge

  A positive point charge is enclosnnc6m+.ep wv,p +hb*s ed in a hollow metallic sphere that is grounded. As compared to the+v pncns mh,6pe .+wb* case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibr) c,xmlqcayn.;;wp :ow)ma l1ium.

State Gauss's law.

  The charge carried by one :;qdnpj+zlqz qctu)r0 u0 -hk(c n.qi9 t)s-lelectron 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 m 0pi)aamq2-v e1 kqjklty+/n1ore protons than electrons does this piece of plastiq1a+k tl q/k0pyi- j)anm 21evc have?

  What is the charge on 1 kg of n0l-szhcrg m9 hk-u+7h nr6 g2protons?

  An atomic nucleus has a +w0qhi30zyec 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 czmj :mmf5c7yk :8la+t9i/ztwm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them f8/ yt mmt5zw:aj:zi+7clmk9?

  A 1.0-C charge is 15 m fxl8 b zpa;70uarom a second charge, and the force between them is 1.0 N. What is the magnitp;b7u0 8azax lude of the second charge?

  Two 1.0-C charges have a forcr3i- b+7zddjge between them of 1.0 N. How far apart are they?

  The force between a ) x-pa*p3hy5cmom n; o$30 \; mC$ 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. md/9f nn )7hcbIf they are moved to a 7hc 9/)bndfnmnew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2m78f7eh- hc 8h pd)jum.0 mC 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 100 cm mark. What archm- 7) mpu87jhhfe8d e 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 of +2.0 mC is5t)dirroon08zn9/ * bp p3*a i8 umzqq 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 3i np q*9ar0onqmup*b8 5rzz/ )oidt 8and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at thkjas p-f9y9 4ce following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0;f4 yj-pcaks99 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, a rfk5v:433j8 fekis0k npvct5nd 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 charvfkik5p j 43ecn:k8t3 s rf0v5ge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Qm)sy v(l pa*:a2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is:map(vy*s l)a the magnitude 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 (h6 2y3qw ic2a /s4-e5 xzqlvjo0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction oizsx - q v2oyw6532c4ej hql/af the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC7sdq8y( yrw(sd07y qm are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electros7s0ym y8((srqyqddw 7 tatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by.;.fu:du mbfv1 6k :hxx7bo fz 3.0 m. At what point, on a line between the vb 1o .x:6:.kfhufbxz7mfd;utwo charges, 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 thepxm5 s685y wgzq f -n8ud/rkz1k31mto origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third8opu3w 8 rsm5fy-gk xtq/ d6zk1 nm5z1 charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge2/qbl 43uhy1b2y+dgz;.z me iqa r6mq -q is placed at x = 2a. Where can a third positive charge +q be placed q+ 2guz/4 l1.mdazq;eb6h3i mrbyq 2yso that the force on it is zero?

  A copper penny has a mass of 3.0 g. A 0og pia i7l.)n8yts+c 4e2l datotal 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 1me,aq ty8ci b3 1wq5mof a fixed proton some distance above it. How far abov11q,yc5 mw8bit3meqa e the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadm y 6; qla9py okpt:he-lye -51d+b0cxs which are 30 cm long. Both are given identical charges, and the electrostatic repulsiodm cpx6ay-eeph9l;yq -: 51+lk0tyo bn 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 magquloob, ix2 +k j3b60jnitude of the electric field at a distance of 1.0 m from the nucb j206koux lo, +biqj3leus?

  What are the magnitude and direction of the electric field at a dis cm6e d-woi*uf7( n1cxtance of 1.50 m from a 5 7uc*c(o fe-xmw1nid60.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. ig-o)a3wz1 3i upsgv1 What is the magnitude of the electric field at the locationpai1-3 uov s )3igzwg1 of the test charge?

  A 5.0-C charge is 10 m from x2u8ch mf.gj:a small test charge. What is the direction of the electrcfuh: x .gj28mic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thgajms6 9b4 4yee force experi9aem4j 4 ybg6senced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a valuepyyw-sg 3j,ks b/ lj13 of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mid k3pgs by-l,/sj yw13jway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a 3x*ayc ek-p3mlw2hi (etx/k8meter stick and a -4.0 mC charge is placed at the 50 cm mark. What iseex8l/x tw*3c-p(h 3 kakiym2 the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm majsrhg0ibwg8xn; jmxd4e6/ +ds1n 2cr 2aeo*4 rk 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 charges is the el h262d x+ 480 dcj;xjagr/wmonns4eesr*gi b 1ectric field zero?

  Two point charges of +3.0 mC and -7.0- n3g)yyo 5a tfjfvh1, mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them?hnj51g ,ftyf vy3o )a-

  Three 3.0 mC charges are atzlnkdwqi8 8)r+ l r4ey(x)rc0 the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Fnri k40)l+czrwx8r)dl8(y eqind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. 7rk/ind 8.(zsf.5facy 6ojko Charges are placed at the corners of the square as 6 kfsyco fj.5o7a.z/ndkr(i8 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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placedhu5xr)4dzh 30prtuc25ly zh4 in a uniform electric field. What is the magnitude of tcp)2zd4r 5h03zux yhthr 5 l4uhis electric field?

  A particle with a charge of 4.0 mC has a m)tl9 xqfojj)7 ass 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 an electric field of 6000 N/C poi;/lnv ypewysc 76y38 dnting downward. What charge must be placed oy c8syv;wyd7/lpn6e3n the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The t:rnzw,: *z- 6(t5fxq5 fy vd gsgv-hjball is placed inside a uniform electric field, and is suspended against the force of gr5 t yd:jx,6sh 5 :znwv-zq (vgf*-ftgravity. 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 i v l-fcpju5iqp7)x6 )ls the magnitude of the electric field 5.0 cm fv5c6)l)-lp jfipxu q7rom the sphere's surface?

  A metal sphere of radius 2.0 cm carries.ca kf7 h1;flzm5 ecj, a charge of 3.0 mC. What is the electric field 6.0 cm from the center of mk ;jfaf7.lcceh z ,15the sphere?