What you are seeing is not actually vapor - vapor is invisible. The mist seen above boiling water, commonly but inaccurately called vapor, is actually made of tiny droplets of liquid water, formed ...

It is in fact not possible to distinguish between these two situations. This observation is called the equivalence principle. It is the basis of general relativity. Note that this principle is stated ...

It seems like the origin is not P, but the point where the pendulum intersects the vertical axis. As a result the coordinates are: $x = L \sin(\theta)$ $y = L - L \cos(\theta)$ Which gives us: $\... View answer Accepted answer 1 votes It depends on what, exactly, is observed. In the standard version of the experiment, only the position of the electrons as they hit the screen is detected. In this case there are interference patterns.... View answer 1 votes The intensity of Earth's magnetic field is 25 to 65 µT. The electric current of a typical lightning strike is about 30 kA. The resulting Laplace force is around 1 Newton per meter of pole. A pole or ... View answer Accepted answer 1 votes No, there won't be lift. The Bernouilli effect will draw some air through the hole until the increased air density balances out the Bernouilli effect and the pressure is the same inside and outside. ... View answer Accepted answer 1 votes The motion of the disc is governed by$m_d a_d = F - F_c$with$F_c$the contact force between the disc and the plank. The motion of the plank is governed by$m_p a_p = F_c\$. Finally, the rotation ...

If you look carefully, you'll notice wires attached to the person, as well as a boom above him that follows him as he walks. The wires are more apparent in the closeup (starting at 0:24), especially ...

An object has a kinetic energy equivalent to its own mass' worth of TNT when it is moving at ~3 km/s. That is much higher than any terminal velocity, so unless the grenade contains very little ...

We used to think it could. Experiments proved that wrong. In the 19th century, it was widely believed that light, being wave-like, must be propagating through a medium that permeates the universe, ...