State the law of conservation of elcwwe)e3;e9w u ectric charge.

  Is it possible for two negativeo+h37p r0 uifov(uji( charges to attract each other?

  Is it possible for a positive and a negatiot3o)/4w qffcve charge to attract each other?

  A glass rod is rubbed with a piec2 50 9ez( mdgwc8h.talo ;rmppe of silk. During the process the glass rod acquires a positive cha(.0m8;pmde5alc9tphg o rw2zrge and the silk

  A proton carries a

  The model of the atosn, fqbnbuerls-vq75w 7-z2e89j o5tm shows a

  A neutral atom always hqzvtu(6zy*c *as

  An atom has more electrons than protons. Thel j,nw:(bxz: y atom is

  Materials in which the electrons are bobavb34 kwbu)j 7)xfh)und very tightly to the nuclei are referred) 3w7vk4bfjabb)xhu) to as

  Materials in which the elect7 9gmvsq1or ts- b*3tlrons are bound very loosely to the nuclei and can move about freely within the mater -31b7*l9rotsqgmvst ial are referred to as

  A negatively charged rod is brought near one end of wpnz2l7y m57h y) *sh(w( tnj n6y1lnhan uncharged metal bar. The end of the metal bar farthest fron 1 sy57whyjt )7h6nnm (zwp2nl( yl*hm the charged rod will be charged

  Sphere A carries a net positive charo6wt.vgw4zdyl+ 5q; mge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire tht 5v4.w6gwz; moly+dqat is grounded. Which statement is correct?

  How can a negatively charged rod charg m1s:wndxg/*mry hh1)e an electroscope positively?

  An originally neutral electroscope is briefly touched wio8 rpple+ /dfx /f..etth a positively charged glass rodde+.f/ /fxplp.ero t8 . The electroscope

  An originally neutral electroscope is groux:eqpim:a+o) 1gu 8honded briefly while a positively charged glass rod is held near it. A e:u x1aopiqgh)o+: m8fter the glass rod is removed, the electroscope

  A positive object touches a n ur+ zbzc97ppj2s koz 1y:fb8+eutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the ljp9z+o2fcr1: u7zb8s bpz+k yeaves?

  A large negatively charged object is plac0 kl+ybq 7aj4ted on an insulated table. A neutral meta4laqj0t b 7ky+llic 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 time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of t8 /e,2vcg 3ggwc pmj*bhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l8g( zogd zqijbb,6c+ 4b94 hvtarger in ma tzi oz(9,hgqc 8g4bdj4b bv6+gnitude than the second charge.

  Sphere A carries a netvjt9 5 eoiwk0; charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the k5jt 9e;wi0vo electrostatic force between them?

  Two charged objects attract each other withlu5 y 6jlxq3ic24t0xn a certain force. If the charges on both objects are doubi xjlx6cq35ytn2 04ulled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attract6.fqr w.t elp8ive forces of F on each other. If the charges are separated by a distance of dweqtl8 .fp6. r/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to kkdz pc:*.a4-xfucx6(f4ie d the force between them if one charge is doubled, theux.d4c :f4- kpck ea(fzx6 i*d 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 m. Whayb3xsxh7)u vq i/2tk* t happens to the magnitude of the force on the pro2q) bx* ux/hvsik y37tton if a second electron is placed next to the first electron?

  An electron and a proton are sepuxot * nl: q2t+b48i;g*tg qgyarated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placeqn; gtb2lu*:4*+qg y itxto8 gd next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wha):+qniwj9aakb k w3q7t happens to tj) kqikwna+ wbq9 a:37he size of the force 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 point cddm twgrl.9r9b w:194woszu/harge of -Q is placed at one of the square's corners, it is observed tha dw9drm4. 9:gu9s1wwltrzb/ ot 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 force acting on the positive charge at the center of the square?

  A point charge of +Q is pl ea6zngyle4m+kqhyn dmw1ez8 *;):m 5 aced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's hzeze;+yay )mkl5g1*n w: qmm6 ne4d8vertices, 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 notr7b9ym9p4. z exikigp p9cx51 a vector?

  At twice the distance from a point charge,6. 1v/ 4lrz3kx ywty8 kod5row the strength of the electric field

  Is it possible to have a zero electric field :iuhn6*j2.pcldd*u b.bffp ecq)3c+ value between a negative and positive charge along the line joining the two char.eifh6b pudd cj 2)cp qnucf +*3b*.l:ges?

  Is it possible to have a zero electric field value between two positive charges 52,l0dkcd ous alongd ok0ds, 25ulc the line joining the two charges?

  Electric field lines nl2c;vp3s+ 6qadvve -qe8bf.sear psitive point charges

  The electric field shown endoxj7- (5a+w7d ozy

  Can electric field line s+yd-x7wz)y ade6hxol0;g- ts intersect in free space?

  A solid block of metal in electrostatic equilibrium is pl)mhbyi *)3o// qmar glaced in a uniform electric field. Give a statement concerning the electric field in m)mb/)hg * 3/rlqioya the block's interior.

  If a solid metal sphpj0w )eb03oh were and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface i0h)30 e wpwojbs

  A cubic block of aluminum rests on a wooden)l;w1m cxaub 0)58eiq3 lpqrr table in a region where a uniform electric fl0 xr1e)aw um3i;8)qc5p rblq ield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium lx*2g sfc3r7+4rj u)jmttb 8p near an electric charge

  A positive point charge is- j5efs ul rm674xtvi5u8)wht enclosed in a hollow metallic sphere that is grounded. As ex-f6uthuir m85sj ) tw475vlcompared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorh3 ekudhym43m 5osu91s in static equilibrium.

State Gauss's law.

  The charge carried by okrfveh,b7 e-3ne 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 +2.0ah -d*1vip fd2p+s ay20 mC. How many more protons than electrons does this piece -dpi+2 fpya2av*hs d1of plastic have?

  What is the charge on 1 kg of protoy1i,b:la .lq foji o 78v39oiwns?

  An atomic nucleus has a charny/4pf: wjw pa 62j8jjge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep(oh:j xr o0x s(ap+ona(ry5/ darated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themo5:h yjp /(r (sx xa+ora(odn0?

  A 1.0-C charge is 15 m fxpv3-j uwb/7, qozib1rom a second charge, and the force between them is 1.0 N. What is the magnitude of /i1w,povxjb7uzq- 3b the second charge?

  Two 1.0-C charges have a force between them of 1ffv884c 1j tdj.0 N. How far apart are they?

  The force between a 1l hc a9nyef(:c pst+0$30 \; mC$ 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 forc nmh)bte dzzm.2vqa v37cy3z4r 5 *d.je. If they are moved to a new sedj c37y)mrd*t vehz4.nzqav5b.2m z3 paration of 8.0 cm, what is the electric force between them?

  Three identical point charg*gscn/,o9ex *b)r:x v2 rku tjes of 2.0 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 are the magnitude and direction of the e j*/:xrs* u, otbe9nv2k)x crglectrostatic force which acts on the charge at the origin?

  Three point charges are pelpo.17 y(fqwq 1w if6laced on the x-axis. 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 of yew.f6 i1q71wpql( 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 posis3+7q8.kwjj:lfc w4 jx2lmictions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x jq c8c7xj3ll+w2kw jim.fs:4 = 0; 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 om f fyq pm8k-6w9i-txz o-,e+lpeoe 1sbdv;1-f 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 is9qpdbk-oom;e 1sz68ef1w t-ef+ixp m-, - lvy 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); Q3 0 2k,torncqj y(sx ppspu.p,7b g+r+.= 5.0 nC is atpr p.p,+uo+qy7 s(2, j gp sb.c0xknrt (0, 0). What 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); Q3 = 5.0 nC is atkh8w*ya 2 /spk (0, 0). What is the direction of the net force khws 8p2k*a/yon the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterz c8d7skj;p:+s :xa4j2cyy slal triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force wkplzjs 8s: c; 4jc2+s:y7xdy ahich acts on any one of the charges?

  Consider point charges ofio050w ,wbcwihb q: p0 +Q and +4Q, which 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 ,w:bi0o 0wp0q c5b hwithat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and9t22+gkgait l a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net f a2g tt+i2kg9lorce on it is zero?

  Charge +2q is placed at the origin a5gl)p1 b,qegyqth6 g;2o ;v pond charge -q is placed at x = 2a. Where can a third positive chah6 q lob y2 1qpv),ogg;t5e;pgrge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to9mshg t6h- z d*j 68ueal(3nlntal 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 att6pn4,f *3 qjpf-kh zrgraction of a fixed proton some hpkj3p -*rffqz6 4g,ndistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by no/2g*np miy5ztnconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwe mg*iznyt2/5p en the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chargh1)yn b sn(*xge of +40e. What is the magnitude of the electric field at a 1()hynb*n xsg distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric i 8*yxn5xg;rxfield at a distance of 1.50 m fror8gyx5nx i*; xm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whl9za+n4wa9w r at is the magnitude of the electril4 aw+zrna9w 9c field at the location of the test charge?

  A 5.0-C charge is 10 m from a s9x+0yucvyi/ xmall test charge. What is the direction of the elect c/yuy9ixv0 x+ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fl; k9dinn)e p9orce experience)pd 9 lkenn;9id by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan/k0/vkqw5st+nj z2c uce of 4.0 m. What is the elevq/2k 5t szc0w+k/ nujctric field at a point midway between the two charges?

  A 5.0-mC charge is plm.ga m.x2cvi0au0* n xm8g4bvaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the mgx*c8 0.biv0uvnam. am 2gx450 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the fmf6 m;swp38)ogzh,r 0 cm mark of a meter stick and a -4.0 mC charge is placempz o,sgh8rm 3ff)w6;d at 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 and x = 0m lp-fgs z+:,c.20 m. What is the magnitcg+pz l:sfm,-ude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of an4 1fgo1 st,10qy3fb.7kluvb 0swafk square of side 0.50 m. The last corner is occakqv4w byu., bls1ok0gs011nf3f tf7upied 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. Chara:g7hd t,uw:d9t buh 03 tu;aqges are placed at the corners of the ,0 uut 7tg;:db a3hqhu:wd9atsquare 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 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 eleu j2hvgqvct1tl6 i,;*ctric field. Wht u6qvv*hi 1; 2jtlgc,at is the magnitude of this electric field?

  A particle with a charge of 4.0 f) v7g4fe;b c; srzyq8mC 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 mass 0.120 g is placed in an elecml1f ls rk8:c9)jqcl5 tric field of 6000 N/C pointing downward. What charge must be placeds5 j8mr)9 llkl c:cfq1 on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00;h1my hj)gco fhle1 m b,olb 8(2,xzt) nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnit (8t mojemx1 lh,f2yb1)) ; hogc,blzhude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the;7i8.nlffevp 8yhvk5cf y bn0 :bvq-6 magnitude of the electric fkyc:.- ne vvi08ffln5h8y p bqf7b v6;ield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What)pdny:8pwud ok2w i1 .u y- r6inudr/8 is the electric field 6.0 cm from th8drdy nw. 62 wkoip/ynp-r1 : d)iu8uue center of the sphere?