Cov nthwv dej hla

Kev txhais ntawm cov nthwv dej transverse
Cov nthwv dej transverse yog cov nthwv dej uas nws qhov kev taw qhia ntawm kev nthuav dav yog perpendicular rau qhov kev taw qhia ntawm kev co ntawm qhov nruab nrab uas lawv dhau los.

Piv txwv ntawm cov nthwv dej transverse
Ib qho piv txwv ntawm nthwv dej hla yog nthwv dej ntawm txoj hlua lossis hlau. Yog tias nthwv dej ntawm txoj hlua mus los ntawm sab laug mus rau sab xis, txoj hlua txav mus rau saum thiab nqis, perpendicular rau qhov kev taw qhia ntawm nthwv dej kis.

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Qhov ceev ntawm nthwv dej

Qhov ceev ntawm nthwv dej tuaj yeem txiav txim siab siv cov qauv dav dav:
qhov ceev ntawm nthwv dej nthuav dav 1Kev piav qhia txog cov mis:
v = qhov ceev ntawm nthwv dej (units yog meters/second)
T = lub sijhawm nthwv dej = lub sijhawm uas nthwv dej yuav tsum taug kev ib lub wavelength (units yog vib nas this)
f = zaus = tus naj npawb ntawm cov wavelengths uas dhau tib qho taw tes thaum ib vib nas this (lub chav yog 1 / vib nas this = hertz)
lambda = wavelength (units yog meters)

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Cov lus nug piv txwv vector

25 Piv txwv ntawm Cov Teeb Meem Vector

1. Ob lub zog sib ncaj nraim rau ib leeg, txhua lub muaj qhov loj li 3 N thiab 4 N. Qhov loj ntawm ob lub zog uas tshwm sim yog...
Kev Sib Tham
Nws paub tias:
F1 = 3 N, F2 = 4 N
Lus Nug: Qhov tshwm sim ntawm ob lub vectors yog dab tsi?
Lus teb:
Tsuas muaj ob lub vectors xwb thiab ob lub vectors yog perpendicular rau ib leeg yog li qhov kev daws teeb meem siv cov qauv Pythagorean.

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Kev sim ua kom nrawm ntawm lub ntiajteb txawj nqus

Cov lus qhia rau kev sim ua kom nrawm ntawm lub ntiajteb txawj nqus

Lub hom phiaj ntawm qhov kev sim :

- Cov tub ntxhais kawm tuaj yeem nrhiav tau qhov loj ntawm qhov nrawm ntawm lub ntiajteb txawj nqus raws li cov txiaj ntsig ntawm kev sim.

Cov cuab yeej thiab cov ntaub ntawv :

- Nres saib
- Pob zeb me me (koj tuaj yeem siv lwm yam khoom)
- Tus pas ntsuas los yog lub cuab yeej ntsuas qhov ntev

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Kev sim txog qhov cuam tshuam ntawm pawg loj rau kev txav mus los dawb

Cov lus qhia sim txog qhov cuam tshuam ntawm pawg ntawm kev poob dawb

Lub hom phiaj ntawm qhov kev sim :
- Cov tub ntxhais kawm tuaj yeem txiav txim siab seb qhov hnyav ntawm ib yam khoom puas cuam tshuam rau kev txav mus los ntawm kev poob dawb ntawm yam khoom.
Cov cuab yeej thiab cov ntaub ntawv :
– Lub moos nres
- Ib daim ntawv thiab ib phau ntawv
Cov kauj ruam sim :
1. Muab daim ntawv tso rau ntawm koj xib teg sab laug thiab phau ntawv tso rau ntawm koj xib teg sab xis.
2. Tso ntawv thiab phau ntawv tib lub sijhawm los ntawm tib qhov siab
3. Yam twg los txog rau hauv pem teb ua ntej, ntawv los yog phau ntawv? Sau cov txiaj ntsig ntawm koj qhov kev soj ntsuam.
4. Muab daim ntawv tso rau saum phau ntawv ces muab phau ntawv thiab daim ntawv tso rau. Yam twg poob rau hauv pem teb ua ntej, daim ntawv lossis phau ntawv? Sau cov txiaj ntsig ntawm koj qhov kev soj ntsuam.

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Piv txwv ntawm cov lus nug txog kev hloov pauv chav tsev

Lo lus nug 1: Hloov Meters rau Kilometers
Hloov 5000 meters mus rau kilometers.

Kev Sib Tham:
\(5000 \, \text{m} = 5 \, \text{km}\)

Lo lus nug 2: Hloov Kilograms rau Grams
Hloov 3 kilograms rau grams.

Kev Sib Tham:
\(3 \, \text{kg} = 3000 \, \text{g}\)

Lo lus nug 3: Hloov Feeb mus rau Vib Nas This
Hloov 15 feeb mus ua vib nas this.

Kev Sib Tham:
\(15 feeb = 900 vib nas this)

Lo lus nug 4: Hloov cov teev mus rau feeb
Hloov 2 teev mus ua feeb.

Kev Sib Tham:
\(2 \, \text{teev} = 120 \, \text{feeb}\)

Lo lus nug 5: Hloov Mais mus rau Meters
Hloov 2 mais mus ua meters. (1 mais = 1609,34 meters)

Kev Sib Tham:
\(2 \, \text{mil} = 3218,68 \, \text{m}\)

Lo lus nug 6: Hloov Inches rau Centimeters
Hloov 12 nti mus ua centimeters. (1 nti = 2,54 cm)

Kev Sib Tham:
\(12 \, \text{nti} = 30,48 \, \text{cm}\)

Lo lus nug 7: Hloov Gallons mus rau Liters
Hloov 3 nkas loos mus ua liv. (1 nkas loos = 3,78541 liv)

Kev Sib Tham:
\(3 \, \text{gallon} = 11,35623 \, \text{liter}\)

Lo lus nug 8: Hloov Mais/Teev rau Km/Teev
Hloov 60 mais ib teev mus rau km/h. (1 mais = 1,60934 km)

Kev Sib Tham:
\(60 \, \text{mais/teev} = 96,5604 \, \text{km/teev}\)

Lo lus nug 9: Hloov Fahrenheit mus rau Celsius
Hloov 98,6°F mus rau °C.

Kev Sib Tham:
\(98,6°F = 37°C\)

Lo lus nug 10: Hloov cov Yards rau Meters
Hloov 10 yards mus ua meters. (1 yard = 0,9144 m)

Kev Sib Tham:
\(10 \, \text{yard} = 9,144 \, \text{m}\)

Lo lus nug 11: Hloov Phaus mus rau Kilograms
Hloov 50 phaus mus ua kilograms. (1 phaus = 0,453592 kg)

Kev Sib Tham:
\(50 \, \text{pound} = 22,6796 \, \text{kg}\)

Lo lus nug 12: Hloov Milliliters mus rau Liters
Hloov 2000 milliliters mus rau litres.

Kev Sib Tham:
\(2000 \, \text{ml} = 2 \, \text{l}\)

Lo lus nug 13: Hloov Centimeters rau Meters
Hloov 300 centimeters mus rau meters.

Kev Sib Tham:
\(300 \, \text{cm} = 3 \, \text{m}\)

Lo lus nug 14: Hloov Meters/Seb rau Kilometers/Teev
Hloov 10 meters/ob vib nas this mus rau kilometers/teev.

Kev Sib Tham:
\(10 \, \text{m/s} = 36 \, \text{km/h}\)

Lo lus nug 15: Hloov Mais mus rau Kilometers
Hloov 5 mais mus ua kilometers. (1 mais = 1,60934 km)

Kev Sib Tham:
\(5 \, \text{mais} = 8,0467 \, \text{km}\)

Lo lus nug 16: Hloov Milligrams rau Kilograms
Hloov 5000 milligrams rau kilograms.

Kev Sib Tham:
\(5000 mg = 0,005 kg)

Lo lus nug 17: Hloov Decimeters rau Meters
Hloov 20 decimeters mus rau meters.

Kev Sib Tham:
\(20 \, \text{dm} = 2 \, \text{m}\)

Lo lus nug 18: Hloov Hnub mus rau Vib nas this
Hloov 1 hnub mus rau vib nas this.

Kev Sib Tham:
\(1 \, \text{hnub} = 86400 \, \text{violence}\)

Lo lus nug 19: Hloov cov lis piam mus rau hnub
Lo lus nug:

Hloov 2 lub lis piam mus rau hnub.

Kev Sib Tham:
\(2 \, \text{lub lim tiam} = 14 \, \text{hnub}\)

Lo lus nug 20: Hloov Knots rau Km / Teev
Lo lus nug:
Hloov 20 knots mus rau km/h. (1 knot = 1,852 km/h)

Kev Sib Tham:
\(20 \, \text{knot} = 37,04 \, \text{km/h}\)

Lo lus nug 21: Hloov Inches rau Meters
Hloov 15 nti mus ua meters. (1 nti = 0,0254 m)

Kev Sib Tham:
\(15 \, \text{nti} = 0,381 \, \text{m}\)

Lo lus nug 22: Hloov Microns mus rau Millimeters
Hloov 1000 microns mus rau millimeters.

Kev Sib Tham:
\(1000 \, \mu\text{m} = 1 \, \text{mm}\)

Lo lus nug 23: Hloov Kilometers/Teev rau Meters/Seb
Hloov 72 kilometers/teev mus rau meters/feeb.

Kev Sib Tham:
\(72 \, \text{km/teev} = 20 \, \text{m/s}\)

Lo lus nug 24: Hloov Pints ​​rau Liters
Hloov 3 pints mus ua liv. (1 pint = 0,473176 l)

Kev Sib Tham:
\(3 \, \text{pint} = 1,419528 \, \text{l}\)

Lo lus nug 25: Hloov Xyoo caum mus rau Xyoo
Hloov 3 xyoo caum mus rau xyoo.

Kev Sib Tham:
\(3 \, \text{xyoo caum} = 30 \, \text{xyoo}\)

Lo lus nug 26: Hloov Millimeters rau Centimeters
Hloov 500 millimeters mus rau centimeters.

Kev Sib Tham:
\(500 hli = 50 cm}

Lo lus nug 27: Hloov Mais mus rau Yards
Hloov 1 mais mus ua yards. (1 mais = 1760 yards)

Kev Sib Tham:
\(1 \, \text{mais} = 1760 \, \text{yard}\)

Lo lus nug 28: Hloov Decameters rau Kilometers
Hloov 100 decameter mus rau kilometer.

Kev Sib Tham:
\(100 \, \text{dam} = 1 \, \text{km}\)

Lo lus nug 29: Hloov Acres mus rau Square Meters
Hloov 2 daim av mus ua square meters. (1 daim av = 4046,86 m²)

Kev Sib Tham:
\(2 \, \text{acre} = 8093,72 \, \text{m}^2\)

Lo lus nug 30: Hloov Microseconds mus rau Milliseconds
Hloov 1000 microseconds mus rau milliseconds.

Kev Sib Tham:
\(1000 \, \mu\text{s} = 1 \, \text{ms}\)

Vim tias qhov kev sib tham no ntev heev, kuv yuav tsum nres ntawm no. Yog tias koj xav pom ntau cov lus nug thiab kev sib tham, thov qhia rau kuv paub.

Piv txwv ntawm cov lus nug hloov pauv rau cov chav yooj yim thiab cov chav muab los ntawm

Kev Hloov Pauv ntawm Cov Chav Ntsuas Yooj Yim
Kev hloov pauv ntawm cov chav ntawm qhov ntev
1 nti =…. cm? = ……. meters? (1)(2,54 cm) = 2,54 cm = 2,54 / 100 = 0,0254 'meter'
1 cm = …. nti ? 1 / 2,54 = 0,394 inci
1 ko taw = ….. cm? (1)(30,5 cm) = 30,5 cm
1 cm = …… ko taw ? 1 / 30,5 = 0,033 ko taw
1 yard = ….. cm? (1)(91,44 cm) = 91,44 cm
1 cm = …… yards? 1 / 91,44 = 0,011 yawg
1 mi = ...km? (1)(1,61 km) = 1,61 km
1 km = ….. mais ? 1 / 1,61 = 0,621 txhiab
1 fermi = ….. meter? (1)(1 x 10-15 meters) = 10-15 'meter'
1 angstrom ( = …. 'meter' ? (1)(1 x 10)-10 meters) = 10-10 'meter'
1 xyoo teeb = ….. meters ? (1)(9,46 x 1015 meters) = 9,46 x 1015 'meter'

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