Ihe atụ iri nke ajụjụ nrụgide
1. Oke na olu nke blọk anọ dị n'okpuru bụ otu, yabụ nọmba ihe na-eme ka obere nrụgide dị n'ala...
A. M
B. II
C. nke Atọ
D. IV
Mkparịta ụka
Usoro nrụgide:
P = F / A
Dabere na usoro a, a na-ekwu na nrụgide (P) na-adabara kpọmkwem na ike (F) na-adabarakwa na mpaghara elu (A). Nke a pụtara na ọ bụrụ na ike ahụ dị ukwuu, nrụgide ahụ na-akakwa ukwuu, ọ bụrụkwa na mpaghara elu ahụ dị ukwuu, nrụgide ahụ dịkwa obere.
Dabere na onyonyo a, oke elu kachasị na-emetụ ala ahụ aka bụ ihe nke atọ nke mere na ihe a anaghị enwe nrụgide kacha nta n'ala.
Azịza ziri ezi bụ C.
2. Ọ bụrụ na oke nke triangles anọ dị n'okpuru bụ otu, a na-egosi nrụgide kachasị na mpaghara nrụgide site na onyonyo a...
Mkparịta ụka
Usoro nrụgide:
P = F / A = w / A
Ozi: P = nrụgide, F = ike, w = ike ndọda, A = mpaghara elu nke metụrụ ala.
Dabere na usoro a, enwere ike ikwubi na nrụgide ahụ dabara kpọmkwem na ndọda ike ma dịkwa ka mpaghara elu nke metụrụ ala. Ya mere, ka ndọda ike ahụ na-akawanye njọ, otú ahụ ka nrụgide ahụ na-akawanye njọ, na obere mpaghara elu nke ihe na-emetụ ala, otú ahụ ka nrụgide ahụ na-akawanye njọ.
Ọ bụrụ na ibu nke triangle anọ ahụ bụ otu, mgbe ahụ ike ndọda dị na triangle anọ ahụ bụ otu. Ya mere, nrụgide ahụ dabere na mpaghara elu dị na ala ahụ, ebe mpaghara elu kacha nta nwere nrụgide kachasị.
Azịza ziri ezi bụ B.
3. E gosipụtara nrụgide kachasị ukwuu na foto a...
Mkparịta ụka
Usoro nrụgide:
P = F / A = w / A
Ozi: P = nrụgide, F = ike, w = ike ndọda, A = mpaghara elu na-emetụ ala aka.
Dabere na usoro a, enwere ike ikwubi na nrụgide ahụ dabara kpọmkwem na ndọda ike ma dịkwa ka mpaghara elu nke metụrụ ala. Ya mere, ka ndọda ike ahụ na-akawanye njọ, otú ahụ ka nrụgide ahụ na-akawanye njọ, na obere mpaghara elu nke ihe na-emetụ ala, otú ahụ ka nrụgide ahụ na-akawanye njọ.
Ọ bụrụ na ibu nke ihe anọ niile bụ otu, ike ndọda dị n'ihe anọ niile bụ otu. Ya mere, nrụgide ahụ dabere na mpaghara elu dị n'ala, ebe mpaghara kacha nta nwere nrụgide kachasị.
Azịza ziri ezi bụ D.
4. Ike nke 500 N na-arụ ọrụ n'elu ala nke 2,5 m2 Nrụgide ahụ…
A. 20 Pa
B. 200 Pa
C. 2000 Pa
D. 2 Pa
Mkparịta ụka
A maara na:
Ike (F) = Newtons 500
Mpaghara elu (A) = 2,5 square mita
A jụrụ: Nrụgide (P)
Azịza:
Nrụgide (P):
P = F / A
P = 500 / 2,5
P = 200 N/m2
P = Pascal 200
Azịza ziri ezi bụ B.
5. Ike nke 500 N na-arụ ọrụ n'elu ala nke 2,5 m2 Nrụgide ahụ…
A. 20 Pa
B. 200 Pa
C. 2000 Pa
D. 2 Pa
Mkparịta ụka
A maara na:
Ike (F) = Newtons 500
Mpaghara elu (A) = 2,5 square mita
A jụrụ: Nrụgide (P)
Azịza:
Nrụgide (P):
P = F / A
P = 500 / 2,5
P = 200 N/m2
P = Pascal 200
Azịza ziri ezi bụ B.
6. Lee foto a! Ibu nke igbe ahụ = 75 kg na ọsọ ọsọ nke ike ndọda g = 10 m/s2Nrụgide dị n'ala igbe ahụ bụ...
A. 150 N/m2
B. 125 N/m2
C. 75 N/m2
D. 25 N/m2
Mkparịta ụka
A maara na:
Ibu igbe (m) = 75 kg
Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s2
Ike ndọda (w) = mg = (75 kg)(10 m/s2) = 750 kg m/s2 = 750 Newton
Mpaghara elu nke ntọala igbe ahụ (A) = mita 6 x mita 5 = mita sụkwịa iri atọ
A jụrụ: Nrụgide nke ala igbe ahụ na-akpata
Azịza:
Nrụgide nke dị n'ala igbe ahụ:
P = F/A = w/A = 750/30 = 25 N/m2
Azịza ziri ezi bụ D.
7. Igbe katọn nwere mango nwere ibu nke kilogram 24 ma a na-etinye ya n'ala, nha ya dịkwa ka egosiri na foto a (g = 10 m/s).2) Oke nrụgide nke katọn ahụ na-etinye n'ala bụ….
A. 600 N/m2
B. 1000 N/m2
D. 2400 N/m2
Mkparịta ụka
A maara na:
Ibu (m) = 24 kg
Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s2
Ibu (w) = mg = (24 kg)(10 m/s2) = 240 kg m/s2 = 240 Newton
Ebe elu ya na ala ya metụrụ aka (A) = 1 m x 0,4 m = 0,4 m2
A jụrụ: Oke nrụgide nke katọn ahụ na-etinye n'ala
Azịza:
Usoro nrụgide:
P = F / A = w / A
Nkọwa usoro: P = nrụgide, F = ike, w = ike ndọda, A = mpaghara elu
Oke nrụgide nke katọn ahụ na-arụ n'ala:
P = 240 N / 0,4 m2 = 600 N/m2
Azịza ziri ezi bụ A.
8. E tinyere blọk anọ yiri ibe ha nke otu oke ahụ n'otu ala n'ọnọdụ egosiri na eserese ahụ. E gosiri nrụgide kachasị ukwuu nke ala ahụ na eserese ahụ...
Mkparịta ụka
Usoro nrụgide :
P = F / A = w / A
Ozi: P = nrụgide, F = ike, w = ike ndọda, A = mpaghara elu.
Dabere na usoro nrụgide ahụ, a na-ekwubi na nrụgide ahụ hà nhata na ike ma dịkwa nhata na mpaghara elu. Ka ike ahụ na-abawanye, otú ahụ ka nrụgide ahụ na-abawanye. Ka mpaghara elu ahụ na-abawanye, otú ahụ ka nrụgide ahụ na-ebelata.
Oke nke blọk ndị ahụ bụ otu, ya mere ibu ha bụ otu. Ya mere, oke nrụgide dị na nsogbu dị n'elu na-adabere na mpaghara elu dị n'ime ala (mpaghara ntọala). Nrụgide kachasị ukwuu nke ala na-enweta bụ blọk nwere mpaghara ntọala kacha nta.
Mpaghara elu nke ngọngọ A = (2 cm)(4 cm) = 8 cm2
Mpaghara elu nke blọk B = (4 cm)(4 cm) = 16 cm2
Mpaghara elu nke ngọngọ C = (4 cm)(3 cm) = 12 cm2
Mpaghara elu nke kuboid D = (3 cm)(3 cm) = 9 cm2
Azịza ziri ezi bụ A.
9. A na-etinye blọk anọ nke otu ibu n'otu ala. Blọk nke na-arụ ọrụ kacha nta n'ala bụ…
Mkparịta ụka
Oke nke blọk ndị ahụ bụ otu, ya mere ibu ha bụ otu. Ya mere, oke nrụgide dị na nsogbu a dị n'elu na-adabere na mpaghara elu nke blọk ahụ metụtara ala (mpaghara ntọala). Nrụgide kacha nta nke ala ahụ na-enweta bụ blọk nwere mpaghara ntọala kachasị ukwuu.
Mpaghara elu nke ngọngọ A = (2 cm)(2 cm) = 4 cm2
Mpaghara elu nke blọk B = (1 cm)(3 cm) = 3 cm2
Mpaghara elu nke ngọngọ C = (4 cm)(2 cm) = 8 cm2
Mpaghara elu nke kuboid D = (4 cm)(4 cm) = 16 cm2
Azịza ziri ezi bụ D.
10. Lee foto a! Blọk ọ bụla nwere otu ibu. Nrụgide kacha nta dị n'elu mkpakọ ahụ dị na blọk ahụ…
Mkparịta ụka
Ibu nke blọk ndị ahụ bụ otu, ya mere ibu nke blọk ndị ahụ bụ otu. A na-achọpụta na nrụgide kacha nta dị na mkpụkọ nrụgide ahụ bụ osisi nke nwere mpaghara ntọala kachasị ukwuu.
Mpaghara elu nke ngọngọ A = (4 cm)(2 cm) = 8 cm2
Mpaghara elu nke blọk B = (3 cm)(2 cm) = 6 cm2
Mpaghara elu nke ngọngọ C = (4 cm)(1 cm) = 4 cm2
Mpaghara elu nke kuboid D = (2 cm)(2 cm) = 4 cm2
Azịza ziri ezi bụ A.
Isi mmalite ajụjụ:
Ajụjụ Ule Sayensị Mba nke Ụlọ Akwụkwọ Sekọndrị/Islamic Junior High School Sayensị
