# Yahoo奇摩 網頁搜尋

廣告

1. ### X 光 可唔可以穿過石紙??

...interaction material . 4. you can make your suitcase with a few mm thick lead , and you&#39;re guaranteed that the security won&#39...be VERY heavy and you might get arrested for setting up a hoax :)

2. ### circular motion

... friction also increases accordingly. But when the rotation is up to a speed such that limited friction is reached, further increase of speed would lead to sliding of the block away from the rotational centre, because there...

3. ### ALphysics dielectric capacitor

...equation: E= Q/εA, ε increases (insertion of dielectric) leads to an increase of Q (current flow from battery) with E be maintained...

4. ### Physics Questions

2a) From Point A to Max point apply v^2=u^2 +2as u=4 0 = 16 + 2(-10)s s = 0.8 apply s= ut +0.5at^2 0.8 = (4)(0) +0.5(-10) t^-2 0.8= 5 t^-2 t= 0.4 from A to Max point, it takes 0.4s From max point back to trampoline It take 1.2 – 0.4 =0.8...

5. ### E&M electrostatics 4 (urgent)

...charge has spreaded over a larger area than before. Hence, this leads to wider separation between electric field lines. Because field line...

6. ### Molecular orbital theory

...function is large in between the atoms because the atomic orbitals add up . The integral (1) is mostly contributed in between R1...

7. ### 沸水的体積會否彭漲

...work against the intermolecular attractive force between molecules, leads to a larger separation between molecules, hence a macroscopic..." between the water molecules, hence taking up no extra space.

8. ### 氣壓低(山頂)溫度低, 點解會氣壓低溫度高? (求物理解)

... temperature leads to low pressure, and low temperature leads to high pressure. Density of air over high temperature region ...the air, latent heat is released, which would in turn heat up the air.

9. ### Charles Law (Heat)

...an esternal force (such as moving a piston down into or up from the gas). Only the first of the above...of such relationship. Hence, a change of gas temperature leads to a change of gas volume, but the reverse is not feasible...

10. ### E&M Electrostatics 3 (urgent)

1. The two spheres are at the same potential because they have been joined by a conductin wire. Should their potentials not be equal, charges would flow from one sphere to the other until the potential difference between the spheres is...

廣告