Physics

4 Ntchito yapaintaneti Mphamvu yokoka Mphamvu ya kinetic - Mavuto ndi Mayankho

1. Chinthu cholemera makilogalamu 5 chili pamtunda wa mamita 10 kuchokera pansi. Kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s ^{2. Kodi} ntchito yotani yomwe yachitika pa chinthucho kuti chikwere pamwamba kufika pamtunda wa mamita 15 kuchokera pansi ndi iti?

Zodziwika:

Kulemera kwa chinthu (m) = 5 kg

Kutalika (h) = mamita 10

Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s ²

Kufunidwa: Ntchito inachitidwa pa chinthucho kuti chikwere pamwamba pa mamita 15 kuchokera pansi.

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Nthawi ya mphamvu - mavuto ndi mayankho

1. Ngati F _R ndi mphamvu yonse ya F ₁ , F ₂ , ndi F ₃ , kodi mphamvu ya F ₂ ndi x ndi yaikulu bwanji?

Zodziwika:

Mphamvu yaukonde (F)_R) = 40 N

Mphamvu 1 (F ₁ ) = 10 N

Mphamvu (F ₃ ) = 20 N

Kufunidwa: Kukula kwa mphamvu F ₂ ndi mtunda wa x

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14 Lamulo la Boyle Lamulo la Charles Lamulo la Gay-Lussac - Mavuto ndi Mayankho

1. Mpweya wothamanga wa tayala la galimoto ndi 432 kPa ndipo kutentha kwake ndi 15 o ^C. Patatha maola angapo, mpweya wothamanga ndi 492 kPa. Ngati kukulitsa sikunyalanyazidwa , kodi kutentha kwa mpweya mu tayala ndi kotani ?

Zodziwika:

Kupanikizika koyambirira (P ₁ ) = 432 kPa

Kupanikizika komaliza (P2 ₎ = 492 kPa

Kutentha koyambirira (T ₁ ) = 15 ^o C

Kufunidwa: Kutentha komaliza ( _T2 )

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Kuzungulira kwa Carnot - mavuto ndi mayankho

1. Ngati kutentha kwa injini kwatengedwa (Q _{1 ) = 10,000 Joules, kodi} injini ya Carnot imagwira ntchito yotani?

Zodziwika:

Kutentha kotsika (T ₂ ) = 400 K

Kutentha kwambiri (T ₁ ) = 800 K

Kulowetsa kutentha (Q ₁ ) = 10,000 Joules

Kufunidwa: Ntchito yochitidwa ndi injini ya Carnot (W)

yankho;

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Manometer chubu - mavuto ndi mayankho

1. Chubu cha manometer chimadzazidwa ndi mitundu iwiri ya zakumwa. Kuchuluka kwa madzi 1 ndi ρ ₁ = 0.8 g.cm ^-3 , ndipo kuchuluka kwa madzi 2 ndi ρ ₂ = 1 g.cm ^-3 , ndipo kutalika h _{1 = 10 cm, ndiye kutalika kwa h 2} ndi kotani.

Zodziwika:

Kuchuluka kwa madzi 1 = 0.8 g.cm ^-3

Kuchuluka kwa madzi 2 = 1 g.cm ^-3

Kutalika 1 = 10 cm

Akufuna: Kutalika 2

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Mphamvu ya makina - mavuto ndi mayankho

Mfundo ya mphamvu ya ntchito ndi makina

1. Chiŵerengero cha kukangana kwa kinetic pakati pa block ndi floor (μ _{k ) ndi 0.5. Kodi} kusamuka kwa chinthu (zinthu) ndi kotani ? Kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s ².

Zodziwika:

Chiŵerengero cha kupsinjika kwa kinetic (μ _k ) = 0.5

Kulemera kwa chipika (m) = 4 kg

Kuthamanga chifukwa cha mphamvu yokoka (g) ndi 10 m/s ²

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Kutentha ndi kutentha - mavuto ndi mayankho

1. Pa thermometer X, madzi oundana pa -30 ^oz ndi madzi owira pa 90 ^oz . 60 ^oz X = ….. ^o C.

Zodziwika:

Madzi oundana = -30 ^o

Madzi otentha = 90 ^oz

Kufunidwa: 60 ^o X = ….. ^o C

Yankho:

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Ma telesikopu a zakuthambo - mavuto ndi mayankho

1.

Kutengera ndi graph yomwe ili pamwambapa, dziwani kukula kwa telesikopu pamene diso lowonera lapumula.

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Thermodynamics - mavuto ndi mayankho

Lamulo loyamba la thermodynamics

1. Kutengera ndi chithunzi cha PV chomwe chili pansipa, kodi chiŵerengero cha ntchito yochitidwa ndi mpweya mu ndondomeko yoyamba ndi chotani, ndi ntchito yochitidwa ndi mpweya mu ndondomeko yachiwiri?

Zodziwika:

Njira 1:

Kupanikizika (P) = 20 N/m ²

Kuchuluka koyambirira (V ₁ ) = malita 10 = 10 dm ³ = 10 x 10 ^-3 m ³

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Kugundana - mavuto ndi mayankho

1. Chinthu A (3 kg) chimayenda pa liwiro la 8 m/s ndipo chinthu B (5 kg) chimayenda pa liwiro la 4 m/s. Ngati kugundana pakati pa zinthu A ndi B kuli kosalala bwino, kodi liwiro la zinthu A ndi B limakhala lotani pambuyo pa kugundana?

Zodziwika:

Kulemera kwa chinthu A (m ₁ ) = 3 kg

Kulemera kwa chinthu B (m2 ₎ = 5 kg

Liwiro la chinthu A (v ₁ ) = 8 ms ^–1

Liwiro la chinthu B (v ₂ ) = 4 ms ^–1

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