雅虎香港 搜尋

  1. On the level between x and y, consider the left tube of the manometer (i.e. the ...12k + (900)gx i.e. 23 = 0.9gx x = 23/[(0.9).(9.81)] m = 2.605 m On the level marked by the lower horizontal line, pressure on the left...

  2. the biggest volcano on earth? The largest volcano in the world is Mauna...volume of about 40,000 cubic kilometers, and an above-sea level area of 5125 square kilometers (these values come...

  3. As follows: 圖片參考:http://i117.photobucket.com/albums/o61/billy_hywung/Jul07/Angel1.jpg

  4. A boy kicked a ball of 1.2kg on level grassland. The ball rolled for 20m before it stopped. What was the resistance...

  5. A man, using a 70 kg garden roller on a level surface, exerts a force on 200N at 30 degrees to the ground. Find the vertical force of the roller on the ground if...

  6. ...s Law, you have to first assume that the frictional force acting on the ball by the grassland is constant , then we can use the formula : v^2 = u^2...

  7. ... original energy level , emitting photons. The energy level of mercury atoms is shown on the diagram given in the web-page below: http://castlelearning.com/review/reference/phys5...

  8. ... state係-10eV但另一粒就-6eV? A: Depending on the energy levels (electron orbits) where the electron is, energy of electron is different...

  9. 當然係Working in a factory full-time with noise level of 95dB 因為一個工人長時間在高嘈音下工作,95dB一定對耳有...

  10. ... emitted, they must pocess energy equal to difference between two energy levels . since the energy quantized, the energy level difference is quantized, thus...