Zvinyorwa zvefizikisi nezvezviitiko zvechisikigo nezvimwewo zvine chekuita nefizikisi.
1. Muzukuru anosunda wiricheya yaambuya vake mupaki yakatenderera nesimba re20 N, nzvimbo yepaki iri 7 m, muzukuru anoita basa rakawanda sei pakutenderera kaviri?
Kukurukurirana
1. Munhu ari muelevator iri kufamba ichikwira nekumhanya kwakasimba. Huremu hwemunhu wacho i800 N. Kamwe kamwe tambo yesimbi inodhonza elevator inotyoka, zvichiita kuti elevator iwire pasi. Simba rakajairika rinobva pasi reelevator pamunhu nguva pfupi tambo yesimbi isati yatyoka uye mushure mekunge yatyoka….
Kukurukurirana
1. Vana vaviri A naB vakasunda bhokisi, kana A vakasunda bhokisi kumaodzanyemba nesimba re400 N naB panguva imwe chete vakasunda bhokisi kumabvazuva nesimba re300 N, ipapo simba rinobuda raA naB...
Kukurukurirana
Dzidzawo hurukuro yemibvunzo yemagetsi nemienzaniso yemibvunzo yemagetsi.
Kuti zvive nyore kunzwisisa simba remagetsi rinogona kushanda riri kure, pfungwa yemunda yakaunzwa. Pfungwa yemunda wemagetsi yakagadzirwa nemusayendisiti wekuBritain Michael Faraday (1791–1867).
Ngatitii girazi rinotanga risina simba remagetsi. Mushure mekukweshwa nejira, girazi rinotanga kutsvairwa magetsi. Kana girazi richinge ratsvairwa magetsi , munda unoonekwa panguva imwe chete wakatenderedza girazi. Kana girazi richinge ratsvairwa, munda unonyangarika panguva imwe chete munzvimbo iyoyo. Saka kuvapo kwemunda hakuparadzaniswi nekuvapo kwemagetsi. Munda wemagetsi hausi rudzi rwechinhu chakaita semhepo uye hausi rudzi rwemafungu akaita semafungu emagetsi, asi chimwe chinhu chinogadzirwa nemagetsi uye chinokanganisa nzvimbo yakatenderedza magetsi, uko simba rayo rinongonzwikwa nemamwe magetsi.
Muchinyorwa chinotaura nezvekuchaja kwemagetsi nemarudzi echaja yemagetsi, zvinotsanangurwa kuti sekuchaja kwemagetsi kunodzingana ukuwo kusiyana nekuchaja kwemagetsi kunokwezvana. Nemamwe mashoko, zvinhu zvinochaja zvakanaka zvinokwezva zvinhu zvinochaja zvakaipa, zvinhu zvinochaja zvakanaka zvinodzinga zvinhu zvinochaja zvakanaka, uye zvinhu zvinochaja zvakaipa zvinodzinga zvinhu zvinochaja zvakaipa. Chiitiko ichi chinoratidza kuvapo kwesimba remagetsi rinoshanda pazvinhu zvinochaja zvakanaka uye zvinhu zvinochaja zvakaipa. Ndezvipi zvinhu zvinopesvedzera hukuru hwesimba remagetsi pakati pezvinhu zvinochaja zvine magetsi?
Kana wakaita bvunzo iri nyore sezvakatsanangurwa muongororo yemagetsi , ungave wakafadzwa nechokwadi chekuti zvinhu zvinogona kukwezvana kana kudzingana. Sei matanda epurasitiki achidzingana asi achikwezvana nematanda egirazi? Kana ukakwiza chidimbu chepurasitiki pabvudzi rakaoma wobva wachiswededza pedyo nezvidimbu zvidiki zvepepa, purasitiki yacho inokwezva zvidimbu zvepepa. Sei purasitiki ichikwezvawo zvidimbu zvepepa zvisina kukwizwa nechimwe chinhu pakutanga? Uchanzwisisa uye uchatokwanisa kutsanangura zvikonzero zvezviitiko zvinosangana negirazi, purasitiki, zvidimbu zvepepa, kana zvimwe zvinhu sezvakakurukurwa pamusoro apa, mushure mekunge wadzidza nyaya yemagetsi uye wanzwisisa tsananguro iri pazasi.
Chinhu chega chega chiri muchadenga chakagadzirwa nemaatomu . Maatomu anoumbwa nemaprotoni, manyuturoni, nemaerekitironi. Mapurotoni anochajwa zvakanaka, maerekitironi anochajwa zvakaipa, uye manyuturoni haachajwa. Atomu ine maerekitironi akawanda, mapurotoni, nemautron. Kana huwandu hwemaerekitironi hwakaenzana nehuwandu hwemapurotoni, huwandu hwemagetsi hwese paatomu izero. Atomu yakadaro haina magetsi. Kana huwandu hwemaerekitironi hukadarika huwandu hwemapurotoni, atomu ine maerekitironi akawanda, zvichiita kuti ive negative charge. Kana huwandu hwemaerekitironi hukadarika huwandu hwemapurotoni, atomu ine mapurotoni akawanda, zvichiita kuti ive negative charge.
2 Mienzaniso yemibvunzo yesatellite ye geostationary
1. Masatellite eGeostationary kana masatellite egeosynchronous masatellite ari pa pfungwa imwe chete pamusoro peequator yePasi. Masatellite aya anoshandiswa kutumira zviratidzo zvekutaurirana (TV, nharembozha), kufanotaura mamiriro ekunze, nezvimwewo. Masatellite egeostationary akareba sei pamusoro pePasi?
G = simba rinokwevera pasi rose = 6,67 x 10-11 N m2/ makirogiramu2
M = huremu hwenyika = 5,97 x 1024 kg
T = nguva yekutenderera kwesetiraiti = Nguva yekutenderera kwenyika = maawa makumi maviri nemana = 24 (masekondi mazana matatu nemazana matanhatu) = masekondi makumi masere nemazana mana nemana = 8,64 x 104 chepiri
Mienzaniso mitatu yeMafungu eElectromagnetic
1. Mafungu eRADAR mafungu emagetsi anogona kushandiswa….
A. Ziva zvinhu zviri muchinhu
B. Kutsvaga zvisaririra zvechinhu
C. Bika chikafu nekukurumidza
D. Kuuraya masero egomarara
E. Kuchenesa michina yekurapa
Kukurukurirana
Mhinduro chaiyo ndeiyi B.
Mienzaniso miviri yeMibvunzo yeRolling Motion
1. Chinhu chine denderedzwa risina chinhu (I = mR)2) ichitenderera isina kutsvedza ichikwira ndege yakakombama ine kumhanya kwekutanga kwe10 m/s. Ndege yakakombama ine kona yekukwira yeθ ine tan θ = 0,75. Kana kukurumidza kunokonzerwa negiravhiti g = 10 m/s-2 uye kumhanya kwechinhu kunoderera kusvika 5 ms-1 ipapo daro rinofambwa nechinhu chakarerekera mudenga ndiro….
A. 12,5 m
B. 10 m
C. 7,5 m
D. 5 m
E. 2,5 m