State the law of conservation of electrt:,h )1stjd51g mo pyvic charge.

  Is it possible for tw+. r ) 1dd1rz6ks(p ob0,tkivrwoq-two negative charges to attract each other?

  Is it possible for a posg*eh qg9gis a9 qy6w6xg:/dh;itive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gl9l1 p gcd:3( cmx;gj0k;7z jn3 b*wdgjyf0mywass rod acquires a positggm; cb*gzc:plf x97( w33 ydnj;m d10jkwy0j ive charge and the silk

  A proton carries a

  The model of the atom shows,*9yyk4b4j)vd img c5ng zy0d a

  A neutral atom always has cx0*afv(zitkd qdn*3 nr: h:(

  An atom has more electrons than protons. The atom is2ir-bs.2ckkh

  Materials in which the electrons are bound very tightly to the nuclei are referrbr4g-rtxx b0 r-0f6ure 0bx-rr0bu4rt6 rf-g xd to as

  Materials in which the electroa89o ruigw9 )yns are bound very loosely to the nuclei and can move about freely withrui8 a )ywg9o9in the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. u6 u l0s-:eg.ha,n1f d fzbb p*l3(/l1zzopi vThe end of the metal bar farthest from the charg/13a pe g(nv0zzh6f.bzdf1i, u-lbo*l :sluped rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They;; g22vz* z(iqb9raw uw 7i/ 0pjittgu are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is gr ip2 *jwa/gqttiugvbu07(zizw2r9; ;ounded. Which statement is correct?

  How can a negatively charged rb*6b 6 w4*qk)+mi 9tc wpelzowod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged d*r )whj+mf gbed1xdp,/i t*8ol -l2hglass rod. The electroscope+h i/l-d ep)rfm2*,8bdoj *gldxwt 1 h

  An originally neutral electroscope is grounded briefly while a posit,u jgv(e2g*a3c aao x7, qp4siively charged glass rod is held near it. After the gljox*sp,4v( 7gu 2gq e3i,aaac ass rod is removed, the electroscope

  A positive object touches a ne8yj 1onlj2oi4 utral electroscope, and the leaves separate. Then a neg8 onoij4jl2 y1ative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placedw5 hp9. ydh8ml44mwzc on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic baly phw4m.d lm 495wz8chl 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 y ;lmlbya+-6eu 8m +xxdv dn 5a*o,u: z(jnl0uthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects zf1euo h35p1dwb 2 3guare separated by a distance d. The first charge is larger in magnitude 3wozpb32hu 1u1df 5gethan the second charge.

  Sphere A carries a net charge and spherr 2 a9w0nj()ezgycq;a e B is neutral. They are placed near eacaqc)a; nwyzre(g 029jh other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each2erjjn m /p7w, other with a certain force. If the charges on bo7mnwr/p 2jje ,th objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d an-w+a;f vedmfqo1 -qw+d exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are th1 f;o--f +mvq+aw edqwe new mutual forces?

  Two charged objects attract each other with a forc3kjis007z svm2jq78h o mp(jbe 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-f s20b v(jqpi0mkzsj j83hm7o7 ourth its original value? The force is now equal to

  An electron and a proton are separated by a distance ofak77vapa ni2: 1.0 m. What happens to the magnitude of the force on the pn k:7i27a pavaroton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens y oubnk ;66d9q ue5(ztki6n g8to the magnitude of the force on the first electron if a sqkn u ;n56dikzu6 e6b8y9gt(o econd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happgh8vg5hzs cia4 or0*wdht;,5 ens to the size of the force on the proton if the electron is movet4a5dc;0z *g hoiv,g w 5h8hrsd 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pointt) cowcw5h r7dqhw085 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 cwww)0t57chqrdo 8h5the 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 equila:6qc-oeg n 2ncteral triangle. When a second charge of +Q is placed at one of the triangle's ver6c -:c2enoqgn tices, 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 ncp;j 16 mrasvh.c5;nxot a vector?

  At twice the distance from a point charge, the strength of the electric iu em b(m,twy3w0g9y(rp m6w( field

  Is it possible to have a zere o-:k30m5hl hjmzr2xsn34u co electric field value between a negative and positive charge along the linenshrz -m jlhx 33cokeu520: 4m joining the two charges?

  Is it possible to havssc kc*; 9/bdme a zero electric field value between two positive charges along the line joining the two charc s* ds;cbmk/9ges?

  Electric field lines near psitive point charg)wy 1cq.2puy+f)dhuo6uw qy+ es

  The electric field sho 6d0q )i)ehuxrwn

  Can electric field lines intersect in ,prsa br -6xm/q)5 bcnh,ar,yfree space?

  A solid block of metal in electrostat nbvujytn h66n2g2pr o3t8h 05ic equilibrium is placed in a uniform electric field. njt86n 5t3 0uphh2 n6rgybvo2 Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equztwvm ;y v4+d:al diameters are each given the same charge, thz4dyvw:m ;+ tve electric field (E) midway between the center and the surface is

  A cubic block of alumi4/3(1opjz6l( ntz s xvz4qkqf num rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be sai6zj z/(14l4n3s xpoq qftzv(k d concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elech hb557 y/mxbftric charge

  A positive point charge is enclosed in a hollow metallnjzrjnbn4 6+ggdt wo18 rc -,ry 8rj2*ic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directld2rc6g j4n8jwb* z ro+, yn8r jg1trn-y above the hollow sphere has

State three properties of g+rpd2:,*c, psftr3 fyi gd.f conductors in static equilibrium.

State Gauss's law.

  The charge carried by on lswc+lx t8o:+e electron 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. n10x /l0mcfdv How many more protons than electrons does thisxnvm00df lc/1 piece of plastic have?

  What is the charge on 1 w mkqu-pt3d8r (idxa1-yr 6)+x ip*zgkg of protons?

  An atomic nucleus has a charge of5+zi3kbcjtr*36l.n) x o hvjm $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, wx mr 73p cunz4l551ghds+kb2 9(v xsphave charge values of 2.0 and -4.0 mC, respectively. Whatzld ks24sxnx( 7g5vuwbmh3p+p 1c 95r is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, 3sdc be h+vws)ql4a0,dm;/ul and the force between them is 1.0 N. What is the magbmlsvle43, sc;wd0/ u)ad+ hqnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are z 80wx/b)lq jmthey?

  The force between a w92jz5r gp hh4 e fl8i+ua;7qg$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm u 16 xgwksr )q;bn4v)f.h pt6kapart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between 4 h)pwv6b1qs)k.6r kxt;gfun them?

  Three identical point charges of 2.0 mC are placed on the xz, n -:(i80er s+biaihyju-u f-axis. The first charge , +e8iz (han0rfiu:uys--ijb 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 charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed o)v.+e6+c. sps 8z; hvrqutbnw4x0lfat the.vp .fucze r+lqh x +ssw4vn;to86b0 ) 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 at the origin?

  Three point charges are located at the folleh1i z9b9lc2jowing positions: Q1 = 2.00 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 magnitudejl1hic92ezb 9 of the force on the 3.00-mC charge?

  A point charge of +Q is placed a-jo5 f wjqh ps 89b+w)u4fzp,lt 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 fo-4z l fqj9o5p,hbwuw jf+ 8ps)rce 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 .q8fnbt)*t ulfu(tynd.w 06lf8kr/o m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of6tl0f/n tb)ulk. *ntwf8.dquyo(8r f 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);t+k,p /h :fmce Q3 = 5.0 nC is at (0, 0). What is the direction otf:kmc +e/p,hf the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are place3 )xg/ l/n4xo :jvv,re4ctchy d at the vertices of an equilateral triangle which/x cog:)e3 4 h4/ ylvtxcrn,vj measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which alxjdj zrip8uc- ec.3d/v ( syzd2; (e5re 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 that the electrostatic force acting on it would be ze;rc- (8e/d y ielpvz 5. d(2cjuxj3szdro?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whef iq pt596-k4 sfjv:gjre on the x-axis can a third charge be placed sog6kp5- vt9fi4s:jf qj the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. +mn/j5e csuv /w(o rp9 Where can a third positive cha9vwn+ce/u(rj /ps5 mo rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 gc ,*;jpftg ne.joaz20. 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 gravitw5fiy1 viv619jq5dza y by the attraction of a fixed proton some distanci55 vayzf1jiq1d6wv 9e above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noiw9f9 k7f3drjw -l8rr nconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threariwkj9 -l f9wdf7r8 r3ds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. me5hbes9 a e2/p6r8duWhat is the magnitude of the electric field at a distance of 1.26m5h /ba9 epu8sdeer 0 m from the nucleus?

  What are the magnitude ap l1;f qz0hw7bnd direction of the electric field at a distance of 1.50 m fromw p7bh1lz0qf ; a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t uf 4xsy u/v;.cofnagz/9zj23m ntn;0he electric field at the n2 fv .4uog 3;/c;m0n fstzzyx/9nujalocation of the test charge?

  A 5.0-C charge is 10 m frokpbpbm9nu fu1n4 +-b8m a small test charge. What is the direction of the electrn+uub1 4k-fmp8 bn9bpic field?

  A 5.0-C charge is 10 m from a small test charge. What is the mag0bd;;ywf w2tonitude of the force experienced by a 1.0 nC charge placed at the locafw2dtw yb;o 0;tion of the test charge?

  Two point charges each have a value of 3.0 C and are separategsg if;uz/+ j-h w0ka7ew8 v6od by a distance of 4.0 m. What is the electric field at a point midg0wsw;gf- 68 i 7zvaou+ ehj/kway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark t;+uahau 83(ijb 6vg9 b+ustvof a meter stick and a -4.0 mC charge is placed at the 50 c+6auh+ tt s (9j;guuv 8bbv3iam mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plak lz,/zvvz28b(.lk u7vreg h 8ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on av (vv .7b,k elz8zhlu8rk z2/g line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC aren1v.)1vao nkr1+ns: x+sfoon.lsa 8 g placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at gko: +rfnnlo)o8+.1.nass n vx 1 vsa1the point midway between them?

  Three 3.0 mC charges are at the three corners of a o,6)xebxm ;p q:c8(xwfj1u v vsquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. 1j)6xmw bxvo; uxvc( :pf qe,8Find the electric field at the center of the square.

  Consider a square wha x1ycnuu2q5kh4 -0vu ich is 1.0 m on a side. Charges are 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 (-ncuu1u 0x2y qv45kah1, 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 in a uniform wk 6y +ml,7itfelectric field. What is the magnitude of this ew +,6i7mklytf lectric field?

  A particle with a charge of 4.0 mC haot *s)qb.nas kt9v62hs 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 place xupsshl u. 6i).a4eo(d in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspende4 aols)iushx ..6uep( d?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball iapmz2 7 ljo.4g0pch 8us placed inside a uniform electric field, and is suspended against the force of gravity. l04go.czp m7 p2 8ujhaWhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm c8khvu ,o1gu7 larries a charge of +2.0 mC. What is the magnitudeul8,v 7g1oukh of the 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. What is the sup 5sw2jwu+22;ib )8qxr pikn,e d/xelectric field 6.0 csn28b jw2qwx )/u;sir dk xup, 5pe2+im from the center of the sphere?