Qhov kev daws teeb meem ntawm lub stopwatch yog dab tsi?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Kev daws teeb meem muaj feem xyuam rau tus lej ntawm tus lej ntawm lub cuab yeej tso saib rau digital stopwatch , los yog qhov tsawg tshaj plaws increment los yog kawm tiav ntawm lub ntsej muag ntawm ib tug analog stopwatch . Piv txwv li, yog tias a stopwatch zaub qhia ob tug lej rau sab xis ntawm tus lej lej, nws muaj a daws teeb meem ntawm 0.01 s (10 ms, lossis 1/100 ntawm ib thib ob).

Ua raws li qhov no hauv kev txiav txim siab, dab tsi yog qhov tsis paub tseeb ntawm lub moos nres?

Xyaum ib qho kev ntsuas ua nrog manually ua stopwatch yuav tsum tau muab ib qho tsis paub meej ntawm +/- 0.2 thib ob es tsis yog +/- 0.01 vib nas this qhov ntsuas muaj peev xwm.

Dab tsi yog qhov tseeb dua li lub stopwatch? meej kev ntsuas tsis zoo ib yam li raug kev ntsuas. Ib raug Kev ntsuas yog "yog" thiab pom zoo nrog kev tshawb xav. Yog li, koj txiav txim siab kom tau ib qho muaj tseeb dua stopwatch . Koj khiav koj tus dev tsib ntau sij hawm, thiab tau txais cov sij hawm nram qab no nrog koj cov tshiab stopwatch 2.000, 2.002, 2.003, 2.004, thiab 2.002 feeb.

Tsis tas li ntawd, dab tsi yog qhov kev nyeem ntawv raug ntawm lub stopwatch?

Cov nyeem ntawv muab lub sijhawm ncua sijhawm. Qee leej watches nres tau txuas nrog hluav taws xob rau lub sijhawm tshwm sim thiab yog li, ntau dua. Qhov tseeb : ± 0.1s. (Cov nyiaj pub dawb rau tib neeg lub sijhawm tshuaj tiv thaiv txwv lub sijhawm raug ntawm stopwatch mus rau 0.1 - 0.4 s rau kev sim kuaj.

Dab tsi yog qhov tsis paub meej rau tus kav?

Tus kav A muaj ib tsis paub meej ntawm ± 0.1 cm, thiab Tus kav B muaj ib tsis paub meej ± 0.05 hli Yog li ntawd, (a) Tus kav A tuaj yeem muab qhov ntsuas 2.0 cm thiab 2.5 cm. (b) Tus kav B tuaj yeem muab qhov ntsuas 3.35 cm thiab 3.50 cm. Daim duab 2.2 Metric Cov thawj coj rau ntsuas Length On Tus kav A, txhua qhov kev faib yog 1 cm.