Hi!
Mechanical advantage is defined as the<em> ratio of force produced by an object to the force that is applied to it.</em>
In our case, this would be the ratio of the force applied by the claw hammer on the nail to the force Joel applies to the claw hammer, which is
160:40 or 4:1
So the mechanical advantage of the hammer is four.
Hope this helps!
Answer:
Consider electrons incident on a Young's double slit
If one slit is covered, the electrons will form a maximum, on the screen, as if they were particles incident on the screen
If both slits are open, the pattern formed on the screen will be the same as if a wave were incident on the screen, even tho electrons are slowed to the point that only 1 electron is incident on the screen at one time.
That means that the electron interferes with itself to create the interference pattern on the screen, and there is no way to determine which slit the electron went thru without destroying the interference pattern.
Due to the barrier being broken the sound will go threw but if the door was closed all the way it would be different and there would be no space for the sound to slip threw
A very small portion of the electromagnetic spectrum is visible
to the human eye.
It's kind of hard to talk about real numbers, since the electromagnetic
spectrum has no ends. But if you consider the spectrum to be the
range of frequencies between household electrical power and gamma
rays, you get a range of roughly 50 octaves, of which our eyes are able
to detect about one octave.