D. CAM vaN deu dao dorrg vrii biOn do 1.5a.
I] Theo chuo'ns trinh Nfins cao( 10 cAu tir c6u 5l d6n c6u
Clliu 5.1. MOt chiec 6 t6 dang chuydn d6ng d6u voi v6n t6c72 km/h vd phia nguo'i quan s6t dirng y€n. VAn t6c Am trong kh6ng khi ld 330"rnls. Ti€ng cdi xe c6 tAn sO tOO0tlr. Coi nhu nguoi quon iet ua clri€c, 0 to o'tren cirng n-rot dtrdng thirng. NgLrcri qLran sdt nghe ducrc Am cira ti6ng coi vrii tAn sd
A.921.86112,. 8.970.59112. C.1060,61 Hz. D.1064.521f2'
Cliiu 52. Cong de tdng t6c nrdt cdnh quat tir trang thiii nghi d€n khi c6 tOc d6 girc 200 rad/s la 3000
.1. Mo merr cluan tinh^cLra cirnh clLrat dri d6i vcri truc quay <16 cho ld
A. 0.15 kg.rnr. I]. 0.30 kg.rnr. C. 0.075 kg.*'. D. 1,50 kg.rri2.
Ciirr 53. [,lcctron cti khoi lu'ong nghi ni,=9,1.10-t'fr.q. trong cft\ng hat /- electrorr co vAn t6c
'', ..,
'' = -1 = 2. 1 0s rr /.r. Klr6i lr,Lorrg cira electron khi d6 la ') A. 12.21. t0 3r kg. ('. 6.10.10 rr li.s. Il. 13.65 l0-rr kg. I). (r.83. I 0 tr kg.
Ciiu 54. Phirt tri6u niio sau clav li klriing dirng'/
A. l\40men qLrhn tfnh cia vAt rin d6i r,ti'i mQt trr-rc quay 16rr thi sirc i cua vdt trong chuy6n clontr cluav ciuanh tn-rc: d6 ltin.
B. N4onrcn quiin linh cua vAt rin phr.r thu0c vao vi tri truc qr-ray vd sr-L phdn UO tnOi lLLong d6i
vtii lrLrc quay'.
C. N4dmcn lu'c tiic dung vdo vAt rin lAtn thay aOi tOc d6 qr-ra1, cua vdt. D. Mornen luc duong tiic dung viro vdt rdn liirn cho vdt quay nhanh dAn.
Ciu 55. Mot khirc xtlo'ng chfia 500 g C-'oldong vi c6cbon phong xa) co do phong xa Id 4000 phan ri /phirt. Bi6t ring do phong xa cua co'th6 s6ng bing l5 phdn rd /phirt tinh tr€n lg c6cbon. Chu ki b6n ri cua ('i' lri 5730 nirl. Tuoi cira mAu xLro'rrg ld
A.l0 804 nirl B. 4100 ninr Cl. 2l90 nam. D. 5l96 nirn
Ciu 56. Phdt bidu ndo duoi dAv ld sai? A. Khi v6t rin quay qua,rh mdt truc
"6 ctinh, moi phAn tu'cua vAt rin ddu c6 gia t6c g6c bing nhau n€n c6 momen qu6n tfnh bing nhau.
B. Momen qu6n tinh cira vdt r6n lu6n c6 tri s6 ducrng.
. . ..,. C . Momen qu6n tinh cira vdt rin dOi v6'i m6t truc quay ddc trimg cho mirc qu6n tinh coa vAt do doi voi chu1,€n dong qual quanh truc.
D. Dorr vi do mornel qu6n tfnh ld kg.*t.
Ciu 57. Tlieo giA thuy€t v€ su ton tai cua qLrac thi prdton duo'c tao n€n til ba qgac ld A. u,u.d. B.s.s,d. Cl. u.d.d. D. c.c.d.
Cf,u 58. NhAn.rdt nao sau dAy la dirng?
A. C6c vAt th€ quanh 1a c6 rttau sic khdc nhau ld khA n[ng phiit ra cric buc xa c6 mdu s6c kh6c
nhau cira tung vdt.
B. C6c 6nh s6ng c6 budc s6ng (tAn sd) khiic^nhaLr thi ddu bi mdi trucmg h6p thu nliu nhau. C. Canr nhdn r'€ nrdLr sic cita c6c v{t thay ooi t<tri thay doi rliu sic cira ngudn chi6u s6ng v6t. D. C'dc 6rih s6ng c6 bum song (tAn sO; khac rrhau thi ddu bi cdc vdt phln xa (ho5c t6n xa) nhu nhau.
CAu 59. Khi c6c photort c6 ning luong hI- chi6u vdo nrdt tArn nh6nr (cci cdng rhoat electron ld A). cdc electrotl quang di€n dLlo-c phcing ra cci ddng ning cuc dqi Ia K. N6u tdn si cira b[rc xa chieu tcti ting r:dp d6i thi dong ning ctLc dai clia cfc electron qLlangdi6n ld
A.K+hf.
cl. 2K.
Cdu 60. M61 ngLroi c6 khdi lr-Long rr : 50 kg dfrng d
Tdp sdn quay hinh trdp, rlu'oLrg kiph 4m, c6 kh6i
Ir'rc,r'ng N'l_: (adsbygoogle = window.adsbygoogle || []).push({});
?90 kg.,Utr.qua ma sirt o truc.quay. [.irc diu h€ dfrng y€n. Ngirdi tat AAu chuy€rr cl6ng voi t,u:,r*6.,Srn/s(so vOi ddt) theo phucrng
'rim ngang vA ti6p tuyen vO'l rnd"p sdn.Cihol chi€u Au"ng-tfr*cltreu chuverr dOng cia rrgr-rdi. Vin t6c gtlc cLra sin khi d6 lr\ cltreu chuverr dOng cia rrgr-rdi. Vin t6c gtlc cLra sin khi d6 lr\