When light passes through concave lenses <span>the refracted rays diverge so that they appear to come from one point called the principal focus.
</span>Light<span> that </span>passes through<span> a </span>convex lens<span> can be focused on a surface like a screen.</span>
Answer:
The speed of the piñata immediately after being cracked by the stick is .
Explanation:
Using the conservation of linear momentum:
(1)
Here:
m(s) is the mass of the stick
m(p) is the mass of the piñata
v(is) is the initial velocity of the stick
v(fp) is the final velocity of the piñata
So, we just need to solve the equation (1) to v(fp).
I hope it helps you!
The force that causes you to fall forward is Inertia.
If both waves have the same wavelength, then the amplitude of
their sum could be anything between 1 cm and 9 cm, depending
on the phase angle between them.
If the waves have different wavelengths, then the resultant is a beat
with an amplitude of 9 cm.