physics

Vektọ nkeji - nsogbu na ngwọta

1. Ihe na-agagharị n'ọsọ nke v = (2i − 1.5j) m/s. Gịnị bụ mgbanwe nke ihe ahụ mgbe sekọnd anọ gasịrị?

A maara:

Akụkụ kwụ ọtọ nke ọsọ (v _x ) = 2 m/s

Akụkụ kwụ ọtọ nke ọsọ (v _y ) = 1.5 m/s

Oge etiti oge (t) = sekọnd 4

Achọtara: Nkwaga

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Nchụpụ nke vector - nsogbu na ngwọta

1. Mmadụ na-aga site na isi A ruo isi B, mita 600 n'ebe ugwu; wee gaa na isi C, mita 400 n'ebe ọdịda anyanwụ; wee gaa na isi D, mita 200 n'ebe ndịda; wee mechaa na isi E, mita 700 n'ebe ọwụwa anyanwụ. Kedu ka nnukwu mgbanwe ahụ si dị?

Ngwọta:

A maara:

AF = AB - BF = AB - CD = 600 - 200 = 400 m

EF = DE – DF = DE – BC = 700 – 400 = 300 m

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Ịgbakwunye vektọ site na iji ihe mejupụtara - nsogbu na ngwọta

1. Vektọ atọ dịka egosiri na eserese dị n'okpuru.

V₁ = 30

V ₂ = 30

V ₃ = 40

Kedu ihe bụ vektọ ndị na-esi na ya apụta?

A maara:

V ₁ = 30, nkuku dị n'etiti V ₁ na x axis = 30 ^o

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Eserese nke mmegharị ahịrị - nsogbu na ngwọta

1. Eserese anya (kwụ ọtọ) na oge (kwụ ọtọ) dịka egosiri na eserese dị n'okpuru. Ihe dị n'oche nke egosiri site na nọmba…

Ngwọta:

Nọmba nke atọ, nke e gosiri site n'ahịrị kwụ ọtọ.

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Ọsọ nkezi - nsogbu na ngwọta

1. Mmadụ na-agba gburugburu akụkụ anọ nwere ogologo nke mita 400 na obosara nke mita 100, ugboro iri na abụọ n'ime otu awa. Kedu ihe bụ ọsọ nkezi na ọsọ nkezi?

A maara:

Ogologo akụkụ anọ = mita 400

Obosara nke akụkụ anọ = mita 100

Gburugburu akụkụ anọ ahụ = (mita 2 x 400) + (mita 2 x 100) = mita 800 + mita 200 = mita 1000

Ogologo = mita 12 x 1000 = mita 12,000 = kilomita 12

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Ụkpụrụ ojii - nsogbu na ngwọta

1. Mmiri gram 200 na 30°C gwakọtara ya na mmiri gram 100 na 90°C. Okpomọkụ mmiri kpọmkwem = 1 cal.gram ⁻¹ °C ⁻¹ . Chọpụta okpomọkụ ikpeazụ nke ngwakọta ahụ!

A maara:

Mmiri dị n'ọbara 2 (m ₁ ) = gram 200

Okpomọkụ mmiri 1 (T1 ) ₌ 30 ^oC

Mmiri dị n'ọbara 2 (m2 ₎ = gram 100

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Ihe Dynamics iri eji eriri jikọọ n'elu igwe Atwood - Nsogbu na Ngwọta

1. Blọk A nwere oke ibu nke kilogram 5, etinyere ya n'elu mbara kwụ ọtọ dị larịị. Blọk B nwere oke ibu nke kilogram 3 kwụgidere n'otu nsọtụ eriri jikọtara ya na blọk A n'elu pulley. Ọsọ ọsọ nke ike ndọda bụ 10 m/s ^2. Gịnị bụ ọsọ ọsọ nke blọk abụọ ahụ?

A maara:

Oke nke ngọngọ A (m)_A) = 5 kg

Ibu nke blọk B (m _B ) = 3 kg

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

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Mmegharị okirikiri - nsogbu na ngwọta

1. Ihe dị kilogram iri na-agagharị n'ime okirikiri na ọsọ na-agbanwe agbanwe nke mita anọ na ọkara (4 m/s). Ọ bụrụ na radius nke okirikiri ahụ dị mita 0.5, mgbe ahụ:

1) Ugboro nke okirikiri bụ 4/π Hz

2) Ọsọ ọsọ nke centripetal bụ 32 ms ^-2

3) Ike centripetal bụ 320 N

4) Oge ahụ bụ 4π s.

Olee okwu ndị bụ́ eziokwu?

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Ngagharị ọdịda n'efu - nsogbu na ngwọta

1. Nkume na-ada n'efu site n'ịdị elu nke mita 45. Ọ bụrụ na ọsọ nke ike ndọda bụ 10 ms ^-2 , kedu ka ọ na-agba mgbe ọ dara n'ala?

A maara:

Ogologo (h) = mita 45

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọtara: Ọsọ ikpeazụ nke nkume ahụ mgbe ọ dara n'ala (v _t )

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