State the law of conservation of electric charge. hekz.p(pn:5gffbd+ dn 9 pv36

  Is it possible for two negabw7f q26d3y cet/mgi 1e ).tttn;e+ibtive charges to attract each other?

  Is it possible for a 1 )e :akdfaz w4z40 ;-eriodptpositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod qq cirax+ )g)6acquires a positi)aq) i+c6xqgr ve charge and the silk

  A proton carries a

  The model of the atom jodh 3ebt:*acha--- xshows a

  A neutral atom always +ccom) ek /xl87.owo j(r1 pxohas

  An atom has more electrons than protztx-re4v/ ka/ jm19..dv djyqons. The atom is

  Materials in which the electrons are bound very t *,rpt3,bt l;8vbj ,nj7x6whnxt g1t +so3uiwightly to the nuclei are referred to a ,t13rbnw l3uhwno7,;+ tj,8bt ixs txvg6 p*js

  Materials in which the electrons arevo4 liztlsppw - rng1g /)th)hf. wt -:ax.+n8 bound very loosely to the nuclei and can move about freely within the material are referr/grtv phi: ltlt8zo+4)gp a.f1- x-wnh.ns w )ed to as

  A negatively charged rod is brought near one end of an uncharged metald*f;rg*unjkh;3ie)vzieu 4 i- z/k ;a bar. The end of the metal bar fartdj kenf4;) i zuvz;reua-*/i g;h3ki*hest from the charged rod will be charged

  Sphere A carries a net positive charge, and sa93gg n0npn -gphere B is neutral. They are placed near each other on an insulated table. Sphere B ipgna 39gg0-nns briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively 3mkp+zqzl *if2.t6 c scharged rod charge an electroscope positively?

  An originally neutral electroscope is6f m0l u0 vska6-;byom briefly touched with a positively charged glass rod. The e0sk;mf umov -0y6lab6lectroscope

  An originally neutral electroscope is grounded briefly while a positivellirjw 9xn, 7jzmhv-;6r ;x8w py charged gl;prh8 ni-6v;m9wzjx rlj 7,wxass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thz4lke346r qcfch. jgj c 5+ck,e leaves separate. Then a negative, qz 5ecgcck4jfl64+jr3.ch k 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 insulated tabem )bf ct:.p6i2lez9lle. 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 clbl. :6 eztmepf2)i9negative 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 Coulomb consta*jul2zbo+vd0 nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larbej3me2e0lbz;,u y ;)kihj+ qger in magnitude than the second my;e uq+b;,b0jh3 jel2)eik zcharge.

  Sphere A carries a net charge and so ko()w)hq) ukphere B is neutral. They are placed near each other on an insulated table. Whi)) uh ko)oq(wkch statement best describes the electrostatic force between them?

  Two charged objects attract each other with ,qndvsl l; h1kabcl emy +4 xhne(9f:mr18,e5a certain force. If the charges on both objern, 4abx(1fn e;l +vhm5ycee1 kdlm:q8l,hs9 cts are doubled with no change in separation, the force between them

  Two charges are separatedi tk8ra t+3*xs szi7:,zkuw,c by a distance 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 force+cr7t3zz i swu,ka,is:t x*k8s?

  Two charged objects attract each other with a force F. What hancy 5:rhfhjjm-5-o f8ppens 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 ocfr5 jy:--5fh8mh njforce is now equal to

  An electron and a proton are separated by a distance of 1i o57;u tjxp 9i+kesdm6dd85 t.0 m. What happens to the magnitude of the force on thipto9eism ku786 +5djd ; 5xdte proton if a second electron is placed next to the first electron?

  An electron and a proton arex5lc08w a2. iv( xrvxa (sg:kx separated by a distance of 1.0 m. What happens to the magnitude of the force o axx8 xi5r.2 (wslvkx:gvc(0an the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0r(s0np mp4lr5 m. What happens to the size of the force on the proton if the elect(5pp s0rlmrn4ron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whencc/s g dba2 vds2sv4,: 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 chac vsa2/v 4cs:,gb dsd2rge 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 placed at the centroid of an equild5j vih:1xg. fateral 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 it1di:j 5.xvfh g. 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 not a v (r/cgt,az2ejector?

  At twice the distance from a point charge, the strength of the electric.ra.wz y3n4ms field

  Is it possible to have a zero electric field value between a neg e5f f(g5zki7;dh5gbpative and positive charge eb;fz kpd557ig(5hfg along the line joining the two charges?

  Is it possible to have a zero electric field value betweenx7d;g) x9hp6z8eaqag two positive charges along the line joininge; x)7xz6dpg8q ah g9a the two charges?

  Electric field lines near psitbt -pg:n- vo1v+lgi fn),3g cwive point charges

  The electric field shc2 64x zy2c7t dkxz7vy6 5vjrz3j b+clown

  Can electric field linesj,ha2 t9q:/ozdv4s hx*: 5ybcncg: ky intersect in free space?

  A solid block of met 5lu; ogcec s:d1au7:oal in electrostatic equilibrium is placed in a uniform electric fieldco:a c d:;57gsuleo1u . 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 a (qnbs m6) 2n-v3:dbuyicbu,u re each given the same chyuud-2c iv,s(n:bunb q 3 )b6marge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woo8a,go r(zbl3 nden table in a region where a uniform electric field is directed straight upward. What can be said concerning the3rn8 az( blg,o charge on the block's top surface?

  If a conductor is in electrostatic equilibrioz/66k80*oj lmny8w3 lry ivhum near an electric charge

  A positive point charge is enclosed in a hollow metallic s92 kbaz3v)we vphere that is grounded. As compared to the case without tkvze932a w vb)he hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertie1bb9m1 rxvw6opyj b8 x)0ngr4s of conductors in static equilibrium.

State Gauss's law.

  The charge carried bygni n wxh8 ztp0z8g620 one 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 cha9/5o qjosxmq uwsx;fma-9 :l.rge of +2.00 mC. How many more protons than electronssol/ 9.: q;mw xquj-5o9xsfam does this piece of plastic have?

  What is the charge on 1 kg of uz69 wx,m 66gqi2nm8k.q zty hprotons?

  An atomic nucleus has a charge of1fs oh v6,6 bcbux t:0a1i8pvs $+40e$. 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 2.0 and -4/6rdl5k eye bb76hw k)*ypew b/bn 7:ye79hos .0 mC, respectively. What is the magnitude of 795khd7h)bb n e pb*le/re6wow7 /ykys ye:b6the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between tjev(lqx -o4/3azjee +il(;ol hem is 1.0 N. What is the magnle3 (+j4qlaje(xlvo e;z i-o/ itude of the second charge?

  Two 1.0-C charges have a force between them ofoz4j: /wn)j;mqnvz+;yc mzh +1;r cek 1.0 N. How far apart are they?

  The force between a agy7 qi)sc +h+$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experie/v/a) kblqflhj ;yuojl4-d ;+nce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electr/kjla4q/luj+ ;-v;dblhof)y ic force between them?

  Three identical point charges of 2.0 mC are pla thdu k 039ki+bom42/tn7xgbfced on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third itx 4nokm+t7gdih b uk3/92fb 0s 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 obmj35hzr25t;l de k/ mn 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 100 cm mark. What are the magnitude and directionj25dlr /e;hm5mkb t3z of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at thevhs*x0v c-xh; following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3hs* c-hv0xvx; = -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+s3j par/) gjp 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 a j)rpg+/sj p3N 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 oy*umdxb5ve1c qz(v7 k( rc;-.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcee x qvcu7o(*k vr bdmc5-y(;z1 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 nyr +( (0sxlqi ;o)wts r+uhmv/C is at (0, 0). What is theryot(mv(lwui/q; hs+0rsx )+ direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC a7; sn xli/dueopjl*8fi *r/0xre placed at the vertices of an equilateral triangle which measures 30 cm on a side. Whaxn o 70**de lf;/s/lriupixj8t is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges, cp zvwo:8e)j of +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 that the electrostatic force acting on it would bco :j wpzv8e),e zero?

  A +3.0-C charge is at the origin and a +9.0-C a) zq(1r-hobeya i;-qq* +ozvcharge is at x = 4.0 m. Where on t q)boo*ya1z - i+zqvr;(e-aqhhe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at thehz;f4col5flz 4r 18w d origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on i8lc4h5l41rz;fo zfdw t is zero?

  A copper penny has a mass of 3.0 g. A t-jd:4 huif6khakrffkqix. 28w * yc *5otal 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 nfvpmet6+sd* z d7 )s0against the force of gravity by the attraction of a fixed proton some d 6mtnsfsd)70pd+ vze* istance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung f32d0f dq21ptqk x1n 7) sx r;a5hl4gfzjfwvh( rom a common point by nonconducting threads which are 30 cm long. Both are given identical3)71 jw d5qgd (2nhl hx f zt1kffv0;rx4qaps2 charges, and the electrostatic repulsion 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 :cye0 y5.jfyz the magnitude of the electric field at a distanc cy50f.eyjyz :e of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric f9x*drhhw. - *mh,ia rjield at a distance of 1.50 m from a 50.0-nC chr-x,r*i ha9h.dw m j*harge?

  A 5.0-C charge is 10 m from a small test charge. What-dh cbe3b+dw3x+d (j f is the magnitude of the electric field at the location of the tb(wbdd+ c-fde3+j 3x hest charge?

  A 5.0-C charge is 10 m fr ;/ 3jmbogvd6c.q n8bwom a small test charge. What is the direction of the electric6;q ob. dnm8j3v/g bcw field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitup., 8v;lr h-lgj1f7/)uleo ea 9otxdvde of the force experienced by a 1.0 nC charge placed at the location of the el/tv 8r-vhfd al7;1eoplg j,9.x )uotest charge?

  Two point charges each have a value 4yr frur.m8 uu,n3cs8 of 3.0 C and are separated by a distance of 4.0 m. What is the electric f4nrsr8u8m urc f3yu,.ield at a point midway between the two charges?

  A 5.0-mC charge is placedey;- ep1,,v ztf ,j ia56jrrih wqzs)06id -ty at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50d) ,tr h,6yz1via,iwetzy fse;rj-j0qp65i- cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plac4g7+jm 1caa tp2th6pned at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm ma+a pjt64pcgm72 nth1 ark. 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 69/x /vhlvufv x = 0.20 m. What is the magnitude ofh6l/f v9/vvxu the electric field at the point midway between them?

  Three 3.0 mC charges are )b clx qvdh1td: w3i8hc/2euqz1-9ij at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find tq28hv3ccxq)1du: - tjildh9ibe/ 1 zw he electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chre+6wffr:7nso/5wi pf9 u (dmarges 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 (1, 0); -3.0 mC at (0, 1). What is the magnitude o6r/ fwfni9o:75 pu d f(w+ersmf the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it isbme, p9c.ue0k placed in a uniform electric field. What is the mage,9beucp k0m .nitude of this electric field?

  A particle with a charge of 4.0 mC has a mas5:juv f 61asyys 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 isx.9 r jottt m, ry0yzhzmm ,6+u62da)w placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendedw,6)tmtyr, mzotxzur d0y +h2 ja9m.6?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The 1w9yul5wp ni :ball is placed inside a uniform eleiu 195l:pynww ctric 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 carrhw6pfe: 1xr-fies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfa- fph:16xewf rce?

  A metal sphere of radiusx3mq51bw6* fd/ukvuh 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm h/v36mwudx f1qu 5*b kfrom the center of the sphere?