Mehlala e 9 ea Lipotso tsa Botenya
1. Bophahamo ba ntho ke 8 cm 3 mme boima ba yona ke digrama tse 84, kahoo boima ba yona ke...
A. 10,5 gr/ cm3
B. 8,5 gr/ cm3
C. 6,4 gr/ cm3
D. 4,8 gr/ cm3
Puisano
Hoa tsebahala hore:
Bophahamo (V) = 8 cm 3
Boima (m) = digrama tse 84
E botsitsoe: Botenya ( ρ)
Karabo:
Foromo ea ho ba le bongata :
ρ = m / V = 84 dikgerama / 8 cm 3 = 10,5 dikgerama/cm 3
Karabo e nepahetseng ke A.
2. Sekotwana sa lehong se na le bophahamo ba 5 cm 3. Haeba boima ba lehong e le 250 g/cm 3 , joale boima ba lehong ke…
A. 1250 g
B. 50 g
C. 10 g
D. 2 g
Puisano
Hoa tsebahala hore:
Bophahamo ba lehong (V) = 5 cm 3
Botenya ba patsi ( ρ ) = 250 g/ cm3
Botsitswe: Boima ba patsi
Karabo:
Foromo ea ho ba le bongata:
ρ = m / V
Tlhaloso: ρ = bongata, V = bophahamo, m = boima
Boima ba patsi:
m = ρ V = (250 g/cm 3 )(5 cm 3 ) = 1250 dikgerama
3. Sheba setšoantšo se ka thoko!
Haeba bophahamo ba metsi e le 35 cm 3 mme boima ba ntho e le = digrama tse 60, jwale boima ba ntho e le...
A. 2,40 g/cm
B. 1,71 g/ cm3
C. 1.00 g/ cm3
D. 0,63 g/ cm3
Puisano
Hoa tsebahala hore:
Bophahamo ba metsi (V) = 35 cm 3
Boima ba ntho (m) = digrama tse 60
E botsitsoe: Botenya ba ntho ( ρ)
Karabo:
Botenya:
ρ = m / V = 60/35 = 1,71 dikgerama/cm 3
Karabo e nepahetseng ke B.
4. Aluminium ea tšepe e na le boima ba ligrama tse 120 le bophahamo ba 60 cm 3 , kahoo boima ba eona bo...
A. 2 gr/ cm3
B. 20 gr/ cm3
C. 200 gr/ cm3
D. 2.000 gr/ cm3
Puisano
Hoa tsebahala hore:
Boima (m) = digrama tse 120
Bophahamo (V) = 60 cm 3
E botsitsoe: Botenya
Karabo:
Foromo ea ho ba le bongata:
ρ = m / V
ρ = dikgerama tse 120 / 60 cm 3
ρ = 2 dikgerama/ cm3
Karabo e nepahetseng ke A.
5. Baithuti ba bane ba lekanyeditse dintho, diphetho tsa teko di bontshitswe tafoleng e latelang:
Baithuti ba lekanyang lintho ka thepa e tšoanang ba…
A. Baithuti A le B
B. Baithuti B le C
C. Baithuti B le D
D. Baithuti C le D
Puisano
Lintho tse entsoeng ka thepa e tšoanang li na le boima kapa sekgahla se lekanang. Ka lehlakoreng le leng, lintho tse entsoeng ka thepa e fapaneng li na le boima bo fapaneng.
Foromo ea bongata ke:
ρ = m / V
Tlhaloso: ρ = bongata, m = boima, V = bophahamo
Karabo e nepahetseng ke B.
6. Sheba setshwantsho sa tekanyo o sebedisa disebediswa le disebediswa tse latelang! Haeba boima ba ntho e le digrama tse 300, jwale boima ba ntho ke...
A. 3,0 g/cm3
B. 7,5 g/ cm3
C. 15 g/ cm3
D. 320 g/ cm3
Puisano
Hoa tsebahala hore:
Boima ba ntho (m) = digrama tse 300
Bophahamo ba ntho (V) = bophahamo ba metsi a tsholohileng = 20 cm 3
E botsitsoe: Boima ba ntho
Karabo:
Foromo ea ho ba le bongata:
ρ = m / V = 300 dikgerama / 20 cm 3 = 15 dikgerama/cm 3
Karabo e nepahetseng ke C.
7. Sheba setšoantšo!
Haeba ntho e boima ba digrama tse 316 e kenngwa ka bateng e tletseng metsi jwalo ka ha ho bontshitswe setshwantshong, jwale boima ba ntho eo ke...
A. 7,9 kg/m3
B. 15,8 kg/ m3
C. 7.900 kg/ m3
D. 15.800 kg/ m3
Puisano
Hoa tsebahala hore:
Boima ba ntho (m) = digrama tse 316
Bophahamo ba ntho (V) = bophahamo ba metsi a tšolohileng = 40 milliliters
E botsitsoe: Boima ba ntho
Karabo:
Pele o bala bongata, qala ka ho fetola diyuniti tsa boima le bophahamo ba ntho.
Boima ba ntho = 316 dikgerama = 316/1000 kg = 0,316 kg
Bophahamo ba ntho = 40 milliliters = 40/1000 litres = 4/100 litres = 0,04 litres
Litara e le 1 = 1 di-cubic decimeter (dm 3 ) = 1/1000 di-cubic meter (m 3 ) = 0,001 m 3
0,04 lithara = (0,04)(0,001) m 3 = 0,00004 m 3
Boima ba ntho:
ρ = m / V = 0,316 kg / 0,00004 m 3 = 316 kg / 0,04 m 3 = 7900 kg/m 3
Karabo e nepahetseng ke C.
8. Sheba setšoantšo se latelang sa tekanyo!
Botenya ba lefika ho latela data e ditshwantshong (Setshwantsho sa 1) le (Setshwantsho sa 2)
A. 6.000 kg/ m3
B. 4.000 kg/ m3
C. 2.400 kg/ m3
D. 670 kg/ m3
Puisano
Hoa tsebahala hore:
Bolela diyuniti tsohle Tsamaisong ya Matjhaba
Boima ba lejoe (m) = 100 grams + 20 grams = 120 grams = 120 / 1000 khilogremu = 0,120 khilogremu
Bophahamo ba lejoe (V) = bophahamo ba metsi a tlositsoeng = 80 milliliters – 60 milliliters = 20 milliliters = 20 / 1000 liters = 2/100 liters = 0,02 liters
Litara e le 1 = 1 di-cubic decimeter (dm 3 ) = 1/1000 di-cubic meter (m 3 ) = 0,001 m 3
Lilithara tse 0,02 = 0,02 x 0,001 m 3 = 0,00002 m 3
E botsitsoe: Botenya ba lefika
Karabo:
Boima ba lefika:
ρ = m / V = 0,120 kg / 0,00002 m 3 = 120 kg / 0,02 m 3 = 6000 kg/m 3
Karabo e nepahetseng ke A.
9. Susi, seithuti sa sehlopha sa bo7, o ile a fuoa mosebetsi ke tichere ea hae oa ho fumana mofuta oa ntho M. Susi o ile a lekanya boima le bophahamo ba ntho eo a sebelisa lisebelisoa tse bontšitsoeng setšoantšong.
Ho latela liphetho tsa litekanyo tsa ntho le ho lumellana ha bongata bo tafoleng, mofuta oa ntho e lekantsoeng ke...
A. Aluminium
B. Zinki
C. Tšepe
D. Kuningan
Puisano
Diyuniti tsohle di hlahiswa Tsamaisong ya Matjhaba
Hoa tsebahala hore:
Boima ba ntho M (m) = 168 dikgerama = 168/1000 dikhilograma = 0,168 dikhilograma
Bophahamo ba ntho M (V) = bophahamo ba metsi a tlositsweng = 80 ml – 60 ml = 20 milliliters = 20/1000 litres = 2/100 litres = 0,02 litres
Litara e le 1 = 1 di-cubic decimeter (dm 3 ) = 1/1000 di-cubic meter (m 3 ) = 0,001 m 3
Lilithara tse 0,02 = 0,02 x 0,001 m 3 = 0,00002 m 3
E botsitsoe: Boima ba ntho
Karabo:
Boima ba ntho ke:
ρ = m / V = 0,168 kg / 0,00002 m 3 = 168 kg / 0,02 m 3 = 8400 kg/m 3
Ho latela tafole ea bongata, ntho e nang le bongata ba 8400 kg/m3 ke koporo.
Karabo e nepahetseng ke D.
Mohloli oa lipotso:
Lipotso tsa Tlhahlobo ea Naha ea Saense ea Sekolo se Phahameng sa Bana ba Banyenyane/Sekolo se Phahameng sa Boislamo
