Physics, 15.06.2021 03:40 JamminJare
Trong thí nghiệm Young, hai khe cách nhau 2mm và cách màn quan sát 3m, dùng ánh sáng đơn sắc 0,68 . Xác định khoảng cách giữa vân sáng bậc 8 và vân tối thứ 4 ở hai phía so với vân trung tâm.
Answers: 3
Physics, 21.06.2019 21:30
In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above
Answers: 1
Physics, 22.06.2019 21:30
Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?
Answers: 3
Physics, 22.06.2019 23:40
Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.
Answers: 3
Trong thí nghiệm Young, hai khe cách nhau 2mm và cách màn quan sát 3m, dùng ánh sáng đơn sắc 0,68 ....
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