Misalai 9 na Tambayoyin Yawan Amfani
1. Girman abu shine 8 cm 3 kuma nauyinsa shine gram 84, don haka yawansa shine...
A. 10,5 gr/cm 3
B. 8,5 gr/cm 3
C. 6,4 gr/cm 3
D. 4,8 gr/cm 3
Tattaunawa
An san cewa:
Ƙarar (V) = 8 cm 3
Nauyi (m) = gram 84
An tambaya: Yawan yawa ( ρ )
Amsa:
Tsarin yawan amfani :
ρ = m / V = gram 84 / cm 8 3 = gram 10,5/cm 3
Amsar da ta dace ita ce A.
2. Kubin katako yana da girman 5 cm 3. Idan yawan itacen ya kai 250 g/cm 3 , to nauyin itacen shine…
A. 1250 g
B. 50 g
C. 10 g
D. 2 g
Tattaunawa
An san cewa:
Girman katako (V) = 5 cm 3
Yawan itace ( ρ ) = 250 g/cm 3
An tambaya: Tarin itace
Amsa:
Tsarin yawan amfani:
ρ = m / V
Bayani: ρ = yawa, V = girma, m = nauyi
Nauyin itace:
m = ρ V = (250 g/cm 3 )(5 cm 3 ) = gram 1250
3. Kalli hoton da ke gefe!
Idan girman ruwan ya kai 35 cm 3 kuma nauyin abin = gram 60, to yawan abin shine...
A. 2,40 g/cm
B. 1,71 g/cm 3
C. 1.00 g/cm 3
D. 0,63 g/cm 3
Tattaunawa
An san cewa:
Yawan ruwa (V) = 35 cm 3
Nauyin abu (m) = gram 60
An tambaya: Yawan abu ( ρ )
Amsa:
Yawan yawa:
ρ = m / V = 60/35 = gram 1,71/cm 3
Amsar da ta dace ita ce B.
4. Aluminum na ƙarfe yana da nauyin gram 120 kuma girmansa shine 60 cm 3 , don haka yawansa...
A. 2 gr/cm 3
B. 20 gr/cm 3
C. 200 gr/cm 3
D. 2.000 gr/cm 3
Tattaunawa
An san cewa:
Nauyi (m) = gram 120
Ƙarar (V) = 60 cm 3
An tambaya: Yawan yawa
Amsa:
Tsarin yawan amfani:
ρ = m / V
ρ = gram 120 / cm 60 3
ρ = gram 2/cm 3
Amsar da ta dace ita ce A.
5. Ɗalibai huɗu sun auna abubuwa, sakamakon gwajin an nuna shi a cikin tebur mai zuwa:
Daliban da ke auna abubuwa da abu iri ɗaya su ne…
A. Ɗalibai A da B
B. Ɗalibai B da C
C. Ɗalibai B da D
D. Ɗalibai C da D
Tattaunawa
Abubuwan da aka yi da abu ɗaya suna da yawa ko nauyi iri ɗaya. Akasin haka, abubuwan da aka yi da abubuwa daban-daban suna da nauyi daban-daban.
Tsarin da ake amfani da shi don yawan abu shine:
ρ = m / V
Bayani: ρ = yawa, m = nauyi, V = girma
Amsar da ta dace ita ce B.
6. Duba jadawalin aunawa ta amfani da kayan aiki da kayan aiki masu zuwa! Idan nauyin abu ya kai gram 300, to yawan abin...
A. 3,0 g/cm3
B. 7,5 g/cm 3
C. 15 g/cm 3
D. 320 g/cm 3
Tattaunawa
An san cewa:
Nauyin abu (m) = gram 300
Girman abu (V) = girman ruwan da ya zube = 20 cm 3
An tambaya: Yawan abu
Amsa:
Tsarin yawan amfani:
ρ = m / V = gram 300 / 20 cm 3 = gram 15/cm 3
Amsar da ta dace ita ce C.
7. Kalli hoton!
Idan aka saka wani abu mai nauyin gram 316 a cikin baho da aka cika da ruwa kamar yadda aka nuna a hoton, to yawan abin...
A. 7,9 kg/m3
B. 15,8 kg/ m3
C. 7.900 kg/ m3
D. 15.800 kg/ m3
Tattaunawa
An san cewa:
Nauyin abu (m) = gram 316
Girman abu (V) = girman ruwan da ya zube = millilita 40
An tambaya: Yawan abu
Amsa:
Kafin a ƙididdige yawan abu, da farko a juya raka'o'in nauyi da girman abin.
Nauyin abu = gram 316 = 316/1000 kg = 0,316 kg
Girman abu = millilita 40 = lita 40/1000 = lita 4/100 = lita 0,04
Lita 1 = 1 cubic decimeter (dm 3 ) = 1/1000 cubic mita (m 3 ) = 0,001 m 3
Lita 0,04 = (0,04)(0,001) m 3 = 0,00004 m 3
Yawan abu:
ρ = m / V = 0,316 kg / 0,00004 m 3 = 316 kg / 0,04 m 3 = 7900 kg/m 3
Amsar da ta dace ita ce C.
8. Kalli hoton aunawa mai zuwa!
Yawan dutsen bisa ga bayanai da ke cikin hotunan (Hoto na 1) da (Hoto na 2)
A. 6.000 kg/ m3
B. 4.000 kg/ m3
C. 2.400 kg/ m3
D. 670 kg/ m3
Tattaunawa
An san cewa:
Bayyana dukkan sassan da ke cikin Tsarin Duniya
Nauyin dutse (m) = gram 100 + gram 20 = gram 120 = kilogiram 120 / 1000 = kilogiram 0,120
Girman dutse (V) = girman ruwan da aka kora = millilita 80 – millilita 60 = millilita 20 = lita 20 / 1000 = lita 2/100 = lita 0,02
Lita 1 = 1 cubic decimeter (dm 3 ) = 1/1000 cubic mita (m 3 ) = 0,001 m 3
Lita 0,02 = 0,02 x 0,001 m 3 = 0,00002 m 3
An tambaya: Yawan dutsen
Amsa:
Yawan duwatsu:
ρ = m / V = 0,120 kg / 0,00002 m 3 = 120 kg / 0,02 m 3 = 6000 kg/m 3
Amsar da ta dace ita ce A.
9. Malamar ta ba wa Susi, ɗaliba 'yar aji 7 aiki don tantance nau'in abu M. Susi ta auna nauyi da girman abin ta amfani da kayan aikin da aka nuna a hoton.
Dangane da sakamakon ma'aunin abu da kuma daidaiton yawan abu a cikin teburin, nau'in abin da ake aunawa shine...
A. Aluminum
B. Sintiki
C. Baƙin ƙarfe
D. Kuningan
Tattaunawa
Ana bayyana dukkan raka'a a cikin Tsarin Ƙasashen Duniya
An san cewa:
Nauyin abu M (m) = gram 168 = kilogiram 168/1000 = kilogiram 0,168
Girman abu M (V) = girman ruwan da aka kora = 80 ml – 60 ml = 20 milliliters = lita 20/1000 = lita 2/100 = lita 0,02
Lita 1 = 1 cubic decimeter (dm 3 ) = 1/1000 cubic mita (m 3 ) = 0,001 m 3
Lita 0,02 = 0,02 x 0,001 m 3 = 0,00002 m 3
An tambaya: Yawan abu
Amsa:
Yawan abu shine:
ρ = m / V = 0,168 kg / 0,00002 m 3 = 168 kg / 0,02 m 3 = 8400 kg/m 3
Dangane da teburin yawan abu, abu mai yawan abu mai nauyin kilogiram 8400/m3 shine tagulla.
Amsar da ta dace ita ce D.
Tushen tambaya:
Tambayoyin Jarrabawar Ƙasa ta Kimiyya ta Makarantar Sakandare/Makarantar Sakandare ta Musulunci
