Ike - nsogbu na ngwọta

Ike bụ ọsọ e ji arụ ọrụ n'ime oge enyere. N'ime mgbakọ na mwepụ, ike bụ oke ọrụ/oge.

P = W/t

Nkọwa: P = ike (Joule/sekọnd = Watt), W = ọrụ (Joule), t = oge etiti oge (sekọnd)

Dabere na nha nha a, enwere ike ikwubi na ka ọnụego ọrụ na-arị elu, otú ahụ ka ike na-arị elu. N'aka nke ọzọ, obere ọnụego ọrụ, otú ahụ ka ike na-adị obere. Ọnụego ọrụ na-ezo aka na ọnụego e ji arụ ọrụ.

[irp]

Ike bụ scalar. Ngụkọta ike SI bụ Joule/sekọnd. Joule/sekọnd = Watt (a kpọchiri ya dịka W), aha ya bụ iji sọpụrụ James Watt. Ngụkọta ike nke ndị Britain bụ foot-paụnd kwa sekọnd.

Nkeji a dị oke obere maka ebumnuche bara uru, yabụ ejiri ike nke otu nnukwu ike (nke a kpọrọ hp) mee ihe. Otu ike nke otu ike = 550 foot-paụnd kwa sekọnd = 764 Watts = ¾ kilowatt.

Enwere ike igosi oke ọrụ ahụ na nkeji oge x ike, dịka ọmụmaatụ, awa kilowatt ma ọ bụ kWh. Otu kWh na-ezo aka n'ọrụ a na-arụ na ọnụego mgbe niile nke 1 kiloWatt maka otu awa.

1. Onye dị kilogram iri ise na-agba ọsọ n'elu steepụ mita iri n'ime nkeji abụọ. Ọsọ ọsọ nke ike ndọda (g) bụ 10 m/ s ^2. Chọpụta ike ya.

A maara:

Ibu (m) = 50 kg

Ogologo (h) = mita 10

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Oge etiti oge (t) = nkeji 2 = 2 (60) = sekọnd 120 s

Achọtara : Ike (P)

Ngwọta:

Usoro ike:

P=W/t

P = ike , W = ọrụ , t = oge

Usoro ọrụ:

W = Fs = wh = mgh

W = ọrụ , F = ike , w = ibu , d = mbugharị , h = elu , m = oke, g = osooso n'ihi ike ndọda

W = mgh = (50)(10)(10) = 5000 Joules.

P = W / t = 5000 / 120 = 41.7 Joules/se c na d.

[irp]

2. Gbakọọ ike achọrọ n'aka onye dị kilogram 60 nke rịgoro osisi dị mita ise n'ogologo n'ime sekọnd 10. Ọsọ ọsọ nke ike ndọda bụ 10 m/s ².

A maara:

Ibu (m) = 60 kg

Ogologo (h) = mita 5 n'akụkụ

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Oge etiti oge (t) = sekọnd 10

Achọtara : Ike

Ngwọta:

Ọrụ:

W = mgh = (60)(10)(5) = 3000 Joules

Ike:

P = W / t = 3000 / 10 = 300 Joules/se cond.

3. Ihe nkiri ọchị na-agbanwe agbanwe nke nwere ike nke watts 300 na oge nkeji ise na-agbagharị agba ise. Ike ọ na-eji bụ….

A. 15 kJ

B. 75 kJ

C. 90 kJ

D. 450 kJ

A maara:

Ike (P) = Watts 300 = Joules 300/sekọnd

Oge (T) = nkeji 5 = sekọnd 5 (sekọnd 60) = sekọnd 300

Ọnụọgụ nke ntụgharị = 5

Achọtara: Ike eji ihe nkiri rotary na-eme

Ngwọta:

Azịza ya ziri ezi bụ D.

[wpdm_package id='1190′]

1. E jiri nsogbu na ngwọta ike rụọ ọrụ ahụ.
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu gbagọrọ agbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ