State the law of conservation 5ux3yu dzjwy6l3 )dz(of electric charge.

  Is it possible for t k;wvzk7i0x s4h05 xerwo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eac 0bi6; x-uuuwkh other?

  A glass rod is rubbedzm z9cl+3wokh q v2.,z with a piece of silk. During the process the glass rod acquires a positive charge and h3wz9 k,+m .qvzl co2zthe silk

  A proton carries a

  The model of the atom sk:e,ik y m87+bw, irqvhows a

  A neutral atom always iubq w4ok+5 ;kp;.iqv has

  An atom has more electrons than protons. mcev6 k0*kf h4The atom is

  Materials in which the , dma4i9*+d.an gqubuelectrons are bound very tightly to the nuclei are referru9mga quaidb *,4nd+.ed to as

  Materials in which the electrons are bound ve7vhv9 c wbbkvyt;z*r:4 :ekf /g/8dzvry loosely to the nuclei and can move about freely within the vb94d7;z:8tfk/: /vz kgvybv*e rc hwmaterial are referred to as

  A negatively charged rod is brought near one end of a n /j3ejdepp1 5i7+wfwn uncharged metal bar. The end of the metal barid7wfpne3p5+ jje 1w/ farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. The k3b.2zn- nqrqkwr e34:0dn ihy are placed near each other on an insulated table. Sphere B is brienr2 bqk nhd0 3inqr:w4 .-3zkefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charg7yetny)w0. p)9bd5jz bfq 4zk e an electroscope positively?

  An originally neutral electroscope is briefly touched with q 054yg4au4rkpcao pi()o 5ni)dq re8a positively charged glass rod. The electroscopio5c rdrq4opg)4p(e4kai n05u8) y qae

  An originally neutral electroscope is grounded brief u12w6ke* l0kl kl2m jdrqq,2cly while a positively charged glass rod is held near it. After the gmu60dr*lj 2kl wqe2qkk2l1c ,lass rod is removed, the electroscope

  A positive object touches m xn *+gww1c,ca neutral electroscope, and the leaves separate. Then a, nxw+1*gwcmc negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an iny) cla)ea1pj2sulated 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 ball, and stops. The first ball rolls forward, but does not touch the negative object. At no yp)a1e ja 2c)ltime does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomkmq k +g87bwy8od9 )rvb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di1 / x6l u+-mfrfns8ptgstance d. The first charge is larger in magnitude than the second chas 86x+ 1nf/lmrugp-ft rge.

  Sphere A carries a net cr. cjku11k8 exxzn35 qharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic k3 .k zqxcxr uj1en518force between them?

  Two charged objects attract each other with a certain forci (r8: 3wpvq(w 29g e4jttafzbms2bu9 e. If the charges on both objects are doumpvs(98z9 2wweb4bra2f t ( qij gut:3bled with no change in separation, the force between them

  Two charges are separated by a distan od2v;0m-doblyq(p hcnco7yny+ 7l-8 ce d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcesydo+7ccl -bo 2 yn 8oyvln;7m(-hp d0q?

  Two charged objects attract each other with a force F. What happen8oy x5 at6twyx1b7qh;h/47m.yb m8 vcr e:tkns to the force between them if one charge is 8b.5 o hwx17axnmm q/;k:7htyybr8v 46tet ycdoubled, the other 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 are separated by a distance of 1.0 myp4:i3tlf+hdf48w4mx j av 7f9b wt8c. What happens to the magnitude of the force on the proton if a second electron is placed next8w4yjfx8dc 9f 7:wbt f4+m ihpla4v 3t to the first electron?

  An electron and a proton are separated by a dib u(qq y*4k;mestance of 1.0 m. What happens to the magnituqku y(4 q*b;mede of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proto. h*tsnn hqn6i xpxn.((9qe2v n are separated by a distance of 1.0 m. What happens to the size of the fqpe nxn .(n(vhin.t69qh* 2 xsorce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pointh 8/pv 5vrjbl6x8/5k1okuw eh 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 electrostatic fp 6/u x1l8kwr5hh8v kj/v5be oorce acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroitj7ju ouqi5tc+ d:c,) d 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 the magnitude of the force that acts on the center charge due to a third chatuoc)ui,7td q5jjc+: rge of +Q placed at one of the other vertices?

  Which of the following is not avm2s// hk:gvir ino+l-0 d.t;f5 zvc l vector?

  At twice the distance from a point charge, the strength of the elz/ 8 ma f 5jyp,(fw5nyr5-nsbwectric field

  Is it possible to have a zero electric field value between a negative mng+ ;vlsh al;wt(61um1nd3kand positive charge along the line joining the two charval;3 s11n+ul(d wg;htm6mknges?

  Is it possible to have a zero electric field value between two2.yr+judoz ezd3 ,rt5 positive charges along the line joining rtod d523 ,y ej+zzr.uthe two charges?

  Electric field lines near psitive point cst qnb(0n(5(6spkonp harges

  The electric field showl640/zfjynq4dwga) f7f jt5 mn

  Can electric field lines intersect in free sp-;djczpxaj doa -3c05ace?

  A solid block of metal in elw 8+pi8kt r aj h(s3c+xqbg2h9ectrostatic equilibrium is placed in a uniform electric field. Give a statement conitp 8skb (rgc+hh3qjw9xa2 8+ cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameterstlbc1g4nwg - ( are each given the same charge, the e tg(g1-nl 4bcwlectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests 2m hra7ceqwh(uvyi c d/*,0v d1wn *b9on a wooden table in a region where a uniform electric field is directed straight 9y( hqwd,rma7i/ ucn2wvv0 b*ehc*d 1upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in1 sp r)hji7dpq85s2dcrwxn 4b j*lbao 590o7s electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere th k 5mnrb/x,5rlat is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has/b l5rr,n5xkm

State three properties of conductors in stampp+2 ;8dsbls tic equilibrium.

State Gauss's law.

  The charge carried by one electicp ;rt1(:dkcnz 6u *qron 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 m1r:zf+hzc,elnhb x89 ore protons than electrons does this piece of z8xr zh ne1lhf:b+c,9 plastic have?

  What is the charge on 1 kg of pro6 pw2;*4 :ciiugov f2qs:eblvk5s q+ lna4d r-tons?

  An atomic nucleus has a-:,6 8ktum1ecibfiu d9- ow kz charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 153+)rhzuvooz1)mx nxm0b2r 0 3k xsix.5 cm, have charge values of 2.0 and -4.0 mC, respectivelxzxs r3x0mnrz +m)hv0 k251oxi uo )3by. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charrzc8r 4h c/:iege, and the force between them is 1.0 N. What is the mag h:circze 4r8/nitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart argrsz 9c /(x8uje they?

  The force between a pwu 3rc40j9lw,,t : dvnyhwe 3$30 \; mC$ 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 arekvm) 6+ ts-b+zoc4nglu2 k o,e moved to a new separation of 8.0 cm, what is the electric force betwe4kog6bn,lu 2ms ck+ -ozt) ve+en them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fia(2 / tviqc4i jt94zh z*igcs;rst charge is at thi2 (jt v*4st4 cz;/hzi i9cagqe 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-axyo8k u(+a c5vnis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4kacu no(y85 +v.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 1vi/p b1u1lj)mzuqf; v t0-qz = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.vqt1pl0jm 1z) uqibzv1/- ;f u00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placuquv3jqz7-k ma0)*kz2p k xr5 zdc1-red at the center of a square, and a second point charge of -Q is placed7-k 3xd5z2a0)- uzu1cvm * zkpqrqjkr 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m)vhde0qybg-wu5o+26( xnknqpwm cwa-.u ;(a .; Q3 = 5.0 nC is at (0, 0). Whatg-vabapou;n-qu 0w d +(hw2k wyx c(5mqne6.. is 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 (0, 0.10 m);o3 ;owm3ul-u ql2;wbt Q3 = 5.0 nC is at (0, 0). Wh;t bwluo- 2o3w;qulm 3at is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verklrn2(kirn g5sfwclh2 0 ;l ** mwe3,itices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one om0src,h*l*ln ef ;lr(w2 k3gn2 i5kw if the charges?

  Consider point charges of +Q and +4Q, which are see 75ay;y1jvu4 :evta nparated 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 electrnty57:jveae41y; a vuostatic force acting on it would be zero?

  A +3.0-C charge is at the originw uwkzw4d /,/teob47kjk)c. h and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charj,)u4.w wdet /hk 4zkbc7o/kwge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charg5/btbixd 8 ;qde -q is placed at x = 2a. Where can a third; tqibx /db58d positive charge +q be placed so that the force on it is zero?

  A copper penny has a 6 5v5a:va:sauh0xf rqmass of 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 thelu l(uor w i+6smp .00w4wgq(h force of gravity by the attraction of a fixed proton some distance above it. How far auwrwwmsi0.(+up6l4ohq l 0 g( bove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads cywnm8 d7sp3;09m h dwn y3)dewhich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads93whd;m7 dwcp8m nsy30) dyen is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is thc*ppdh).x ih ,e magnitude of the electric field at a distanchpp)c dh,.i* xe of 1.0 m from the nucleus?

  What are the magnitude and direction of the0hbgbir:4 gcph4btw )a :,qw0 electric field at a distance of 1.50 m ) g wp::h,wr0tb bc4ai40h gqbfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. -+2 4bsuidmqg .q(vvpWhat is the magnitude of the electric field at the locationv (vs2qdu.4b giqp m-+ of the test charge?

  A 5.0-C charge is 10 m from a small test vf/ jcu fsxf3k98 xb,u+e pdd1h*omk;/ :l5opcharge. What is the direction of the electricob3 j ;sh ,x* le:duc5dop1fv +/9 pxmfkufk8/ field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituddyq .wrz82h*otk)q2(+ /r d.a : mpuc)gr wosme of the force experienced by a 1.0 nC charge placed at the location of t8)rdr tmd 2.) w( pwk+s u /*.qhz:yagr2mcqoohe test charge?

  Two point charges each have a value of 3.0 C and ak9z ez.z1d rn 4brj4c.re separated by a distance of 4.0 m. What is the electric field at a point midway between the twzknjz41e cz.dr9rb .4 o charges?

  A 5.0-mC charge is plazga*+v s jpc+lc87/wnced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 38 *vcwj c++pl7ag/snz0 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4. x.l d9: xze:gg *;wx7ejb5oou0 mC charge is placed at the 50 cm mark. At what point on a line 5d:loojx uew b7:xgxz;g.9 *e 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 and-jb/ba 4qlv 3+ss(mhb x = 0.20 m. What is the magnitude of the electricl mb 3j(bsq4hv-b+sa/ field at the point midway between them?

  Three 3.0 mC charges are at the three corners*5u c5 ovk8-vi4fjmcxf mx2a,2/ggtg of a square of side 0.50 m. The last corner is occupied by a -3.0 mC *vu2cm5x x5o ag/mf4f2 vgiktjcg -,8charge. Find the electric field at the center of the square.

  Consider a square whv7in f)a8 1s cs( gt2o;34v jnkpnbq-pf ,7lvnich is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, ft kn(-,ji;ns8l1bnc7fnv v7)sp2pq gv 4o3a0); +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 chv3 4we0iwpe , e0ekgl m meh3c-o856eaarge of 5.0 mC when it is placed in a uniform electr3-5i8 ee4e eh km0o36ww lp0,vgemaecic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC wcwt3j w myiw:v)2 qf fi()-i5has 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 an x(kxcvl:zk yg bi 7..7electric field of 6000 N/C pointing k:c vgbl77xz kx.i.(ydownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placeemg82r 4tfn* nd inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude 4mge f*2 r8nntand direction of the electric field?

  A metal sphere of radius 10 cm carries a in fpb,2ji) 5svt3/v cjs*1xzcharge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from thep*cz 12nvssijxi,3ft 5 j /b)v sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect(pm1: 9ks xvpg8r6paa ric fie1(arksp69pg:8 v a xmpld 6.0 cm from the center of the sphere?