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  1. ... somewhere between 60 and 68 degrees F. You’ll have to experiment to find what feels good, but the first sign of good sleep is a...

    分類:社會及文化 > 語言 2017年06月14日

  2. .... Since the two meters are used in an experiment , we cannot take it for granted that they are ideal. Hence...

    分類:科學及數學 > 物理學 2017年03月25日

  3. When the ball reaches the earth plate, it becomes neutral, as electrons will flow from the earth-plate to the ball. But the ball is still under the action of the +ve plate (i.e. the ball is subject to the action of the electric field lines set up by the +ve plate), hence -ve...

    分類:科學及數學 > 物理學 2016年12月03日

  4. Photoelectric effect occurs when an incident photon is completely absorbed by the outermost orbital electron of an atom, and resulted in the ejection of that electron from its orbit. Depending on where the atom is (on the surface of the photosensitive material or deep...

    分類:科學及數學 > 物理學 2016年11月05日

  5. 1. 因為 experiment 可以是名詞 也可以是動詞. 在你這一句話裡面, experiment 是不及物動詞 所以要接...

    分類:社會及文化 > 語言 2016年09月16日

  6. (a) Long wire: B = (uo)I/(2.pi.r) where uo is the permeability of free space (= 4.pi x 10^-7 F/m) and pi = 3.14159... hence, B = (4.pi x 10^-7) x 1/(2.pi x 0.03) T = 6.67 x10^-6 T Circular coil: B = (uo)N.I/2R hence, B = (4.pi x...

    分類:科學及數學 > 物理學 2016年08月05日

  7. Q: Why is the path difference d=(n-1)*thickness? A: In the equation: path difference = m入, the "path difference" is the "optical path difference", NOT the "physical path difference". The optical path = n x physical path where n is the refractive...

    分類:科學及數學 > 物理學 2016年10月03日

  8. After sticking fast on hot wax in beaker,tied on a thread,pour enough water on the surface of liquid-cork top.The cork was cut away threading by reading the difference in volume=the volume of the cork in Experiment .

    分類:科學及數學 > 數學 2016年03月06日

  9. Since 15 fringes are produced, there are 7 fringes on each side of the central axis. Hence, (0.1x10^-3).sin(theta) = 7 x (700x10^-9) where angle(theta) is the angle subtended by the 7th fringe on the central axis. thus, sin(theta) = 0.049 (theta) = 2.8...

    分類:科學及數學 > 物理學 2015年09月06日