Mibvunzo 7 Bhizinesi
1. Tarisa mufananidzo unotevera!
Huwandu hwebasa rakaitwa pabhuroko iri...
A. 3 Joule
B. 8 Joule
C. 16 Joule
D. 48 Joule
Kukurukurirana
Zvinozivikanwa kuti:
Simba (F) = 12 Newtons
Kutama (s) = mamita mana
Akabvunzwa: Kuedza (W)
Mhinduro:
Mumufananidzo uri pamusoro, kusuduruka kwechinhu kuri munzira imwecheteyo nesimba. Fomura yebasa renyaya iyi ndeiyi:
W = F s = (12 Newton)(mamita 4) = 48 Newton metres = 48 Joules
Mhinduro chaiyo ndiD.
2. Bhokisi rehuni rinosundirwa nesimba re200 N kuitira kuti rifambe chinhambwe che2 m, basa rinoitwa nebhokisi rehuni...
A. 20 J
B. 100 J
C. 200 J
D. 400 J
Kukurukurirana
Zvinozivikanwa kuti:
Simba (F) = 200 Newtons
Kutama (s) = mamita mana
Akabvunzwa: Kuedza (W)
Mhinduro:
Bhizinesi:
W = F s
W = (200 Newton)(mamita maviri)
W = 400 mamita eNewton
W = 400 Joule
Mhinduro chaiyo ndiD.
3. Tarisa mufananidzo!
Mutyairi wemotokari yemhando ye sedan anoda kumisa mota yake 0,5 m chaiyo pamberi perori yaive 10 m pakutanga kubva pa sedan. Sedan inodiwa kushanda nesimba kwakadii?
A. 525 J
B. 500 J
C. 495 J
D. 475 J
Kukurukurirana
Zvinozivikanwa kuti:
Kutamiswa (s) = mamita gumi - mamita 0,5 = mamita 9,5
Simba (F) = 50 Newtons
Akabvunzwa: Kuedza (W)
Mhinduro:
Fomura yebhizinesi:
W = F s
W = (50 Newton)(mamita maviri)
W = 475 mamita eNewton
W = 475 Joule
Mhinduro chaiyo ndiD.
4. Tarisa mufananidzo!
Kushanda nesimba kwakaitwa naAndi naToni kuti vafambise mota yacho mamita mana kana simba revana vaviri iri 50 N uye 70 N zvichiteerana...
A. 80 joules
B. 200 joules
C. 280 majoules
D. 480 majoules
Kukurukurirana
Zvinozivikanwa kuti:
Kutama (s) = mamita mana
Simba rinobuda (F) = 50 Newtons + 70 Newtons = 120 Newtons
Akabvunzwa: Kuedza (W)
Mhinduro:
Bhizinesi:
W = F s = (120 Newton)(mamita 4) = 480 Newton metres = 480 Joules
Mhinduro chaiyo ndiD.
5. Mutyairi ari kudhonza mota yakamiswa sezvakaratidzwa mumufananidzo, kuitira kuti mota ifambe chinhambwe che 1.000 cm. Huwandu hwebasa raitwa ndi…..
A. 250 Joule
B. 1.000 Joule
C. 2.500 Joule
D. 250.000 Joule
Kukurukurirana
Zvinozivikanwa kuti:
Taura zvikamu zvese muInternational System
Simba (F) = 250 Newtons
Kutamiswa (s) = 1000 cm = 1000/100 metres = 10 metres
Mubvunzo: Huwandu hwekushanda nesimba (W)
Mhinduro:
Fomura yebhizinesi:
W = F s = (250 Newton)(mamita 10) = 2500 Newton metres = 2500 Joules
Mhinduro chaiyo ndiC.
6. Tarisa mufananidzo unotevera wekufamba kwezvinhu!
Kana basa rinoitwa nemasimba aya pachinhu riri 375 Joules, chinhu chacho chinogona kufamba daro...
A. 7,5 mamita
B. 15 mamita
C. 22,5 mamita
D. 25 mamita
Kukurukurirana
Zvinozivikanwa kuti:
Basa (W) = 375 Joules
Simba rinobuda ( ΣF) = 40 N + 10 N – 25 N = 25 Newtons (kurudyi)
Akabvunzwa: Kudzingwa (vanhu)
Mhinduro:
Fomura yebhizinesi:
W = F s
Kutamiswa:
s = W / F = 375 Joules / 25 Newtons
s = mamita zana
Mhinduro chaiyo ndeiyi B.
7. Mabasa evamwe vana vari pazasi asingasanganisire kuita bhizinesi ndeaya...
A. kusunda ngoro yenyama mamita gumi
B. kusunda mota yakamiswa kusvika yafamba
C. kusunda madziro akasimba kusvika wadikitira
D. Kutasva bhasikoro kubva kumba kuenda kuchikoro
Kukurukurirana
Fomura yebhizinesi:
W = ΣF s
Ruzivo: W = kushanda nesimba, F = simba, s = kusuduruka
Zvichibva pafomura iri pamusoro apa, pane basa kana paine simba uye pane kusuduruka (pane kufamba).
Mhinduro chaiyo ndiC.
Kwakabva mubvunzo:
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