Magulu a Gurumuda
Ma diffraction gratings - mavuto ndi mayankho
1. Chophimba chokhala ndi mipata 4000 pa sentimita imodzi chimayatsidwa ndi kuwala kwa monochromatic ndipo chimapanga mzere wowala wachiwiri pa ngodya ya 30°. Kodi kutalika kwa mafunde a kuwala komwe kumagwiritsidwa ntchito ndi kotani? (1 Å = 10 -10 m)
Zodziwika:
Mtunda pakati pa mipata (d) = 1 / (mipata 4000 / cm) = 0.00025 cm = 2.5 x 10 -4 cm = 2.5 x 10 -6 mamita
Dongosolo (n) = 2
Tchimo 30 o = 0.5
1 Å = 10 -10 m
2 Mfundo ya ntchito ndi mphamvu Mphamvu yosasintha Kuyenda pa ndege yopendekeka ndi kukangana - Mavuto ndi Mayankho
1. Chipika chimatsika pansi pa malo opendekera ndi kukangana. Kodi liwiro la chipikacho ndi lotani pamene chipikacho chikugunda pansi? Chiŵerengero cha kukangana kwa kinetic ndi 0.4. Kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s 2.
Zodziwika:
Kutalika koyambirira (h)o) = 6 m
Kutalika komaliza (h t ) = 0 m
Liwiro loyambirira (v o ) = 0 (block poyamba ili pamalo opumulira)
Koyefifiti ya kukangana kwa kinetic (μ k ) = 0.4
Ntchito yochitidwa mu njira za thermodynamic - mavuto ndi mayankho
1. Mpweya woyenera umapanikizidwa kuchokera ku boma 1 kupita ku boma 2 monga momwe zasonyezedwera pa graph ili pansipa. Dziwani ntchito yomwe mpweyawo wagwira.
Anakonza
Lita imodzi = 0.001 m 3
Zodziwika:
Kupanikizika 1 (P 1 ) = 10 kPa = 10,000 Pa = 10,000 N/m 2
Kupanikizika 2 (P 2 ) = 20 kPa = 20,000 Pa = 20,000 N/m 2
Kugundana ndi kusunga mphamvu zamakina - zofufuzira ndi mayankho
1. Zinthu ziwiri zili ndi kulemera kofanana , m 1 = m 2 = 0.5 kg yotsika kuchokera kutalika komweko monga momwe zasonyezedwera pachithunzi chili pansipa. Utali wozungulira wa bwalo ndi 1/5 m. Kugundana pakati pa zinthu zonse ziwiri ndikotanuka bwino. Dziwani liwiro la chinthu chilichonse pambuyo pa kugundana. Kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s 2.
Zodziwika:
Unyinji wa chinthu (m) = m1 = m2 = makilogalamu 0.5
Kutalika koyambirira (h 1 ) = 1/5 m
Kutalika komaliza (h 2 ) = 0 ( pansi pa njira )
Momentum Impulse ndi Projectile motion - Mavuto ndi Mayankho
1. Mpira wa 0.2-kg udzalowetsedwa mu dzenje la C, monga momwe chithunzi chili pansipa chikusonyezera. Wogundayo agunda mpirawo mu sekondi 0.01 ndipo njira ya BC idayenda mu sekondi imodzi. Dziwani kukula kwa mphamvu kuti mpirawo ulowetsedwe mu dzenje la C. Kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s 2.
Zodziwika:
Ngodya (θ) = 60 o
Kulemera kwa mpira (m) = 0.2 kg
Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s 2
Nthawi yopuma (Δt) = masekondi 0.01
Kuyenda kosagwirizana kwa mzere - mavuto ndi mayankho
1.
Gome ili pamwambapa likuwonetsa deta ya zinthu zitatu zomwe zimayenda mtunda womwewo pa liwiro losalekeza.
Kodi liwiro lomaliza la chinthu P ndi liwiro loyambirira la chinthu Q ndi liti?
Chiphunzitso cha Kinetic cha mpweya ndi lamulo loyamba la thermodynamics - mavuto ndi mayankho
1. Mpweya wabwino uli mu chidebe chokhala ndi voliyumu ya malita 4 ndipo kupanikizika kwake ndi 3 atm (1 atm = 10 5 Nm -2 ). Mpweya wabwino umatenthedwa pa kupanikizika kosalekeza kuyambira 27 o C mpaka 87 o C. Mphamvu ya kutentha ya mpweya ndi 9 JK -1 . Kodi voliyumu yomaliza ya mpweya ndi kusintha kwa mphamvu yamkati ya mpweya ndi yotani?
Anakonza
Njira ya Isobaric (kupanikizika kosalekeza)
Zodziwika:
Kuchuluka koyambirira kwa mpweya (V 1 ) = malita 4
Kuzungulira kwa matupi olimba - mavuto ndi mayankho
Mphindi ya mphamvu
1. Mphamvu zitatu zimagwira ntchito pa mtanda wautali mamita 6, monga momwe chithunzi chili pansipa chikusonyezera. Kodi mphamvu ya ukonde yomwe imazungulira mtandawo mozungulira O ngati mzere wozungulira ndi chiyani?
Zodziwika:
Mzere wozungulira pa mfundo O.
Mphamvu 1 (F 1 ) = F
Mtunda pakati pa mzere wa zochita wa F1 ndi mzere wozungulira (r1 ) = mamita 3
Springs motsatizana ndi motsatizana - mavuto ndi mayankho
1. Chinthu cha magalamu 160 chimamangiriridwa kumapeto kwa kasupe ndipo kusintha kwa kutalika kwa kasupe ndi masentimita 4. Kodi kusintha kwa kutalika kwa akasupe atatu olumikizidwa motsatizana ndi motsatizana ndi kotani , monga momwe chithunzi chili pansipa chikusonyezera?
Zodziwika:
Kusintha kwa kutalika kwa kasupe (Δx) = 4 cm = 0.04 m
Kulemera (m) = magalamu 160 = 0.16 kg
Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s 2
Kusintha kwa kayendedwe ka kuzungulira - mavuto ndi mayankho
1. Pulley yokhala ndi nthawi ya inertia I = 2/5 MR 2 ili ndi kulemera kwa 2-kg. Ngati mphindi ya mphamvu pa pulley ndi 4 Nm ndiye kuti kuthamanga kwa pulley ndi kotani? Kuthamanga chifukwa cha mphamvu yokoka ndi g = 10 ms -2.
Amadziwika :
Nthawi ya inertia ya pulley (I) = 2/5 MR 2
Kulemera kwa pulley (M) = 2 kg
Mphamvu ya mphindi (τ) = 4 Nm