Determine the frequency and the speed of these waves. The wavelength is 8.6 meters and the period is 6.2 seconds. Now find speed using the v = f. λ equation<span>.</span>
Answer:
Explanation:
By Einstein's Equation of photoelectric effect we know that
here we know that
= energy of the photons incident on the metal
= minimum energy required to remove photons from metal
= kinetic energy of the electrons ejected out of the plate
now we know that it requires 351 nm wavelength of photons to just eject out the electrons
so we can say
here we know that
now we have
now by energy equation above when photon of 303 nm incident on the surface
<span>You cant change the curve of a graph with out changing the equation</span>
Explanation:
Use the magnitude and direction of each vector to find its components. Add the components that are along the same dimension. Then use Pythagorean theorem and trigonometry to find the magnitude and direction of the resultant vector.
For example, if we have a vector of magnitude A and direction α, and another vector of magnitude B and direction β, then the components of the first vector are:
Ax = A cos α
Ay = A sin α
And the components of the second vector are:
Bx = B cos β
By = B sin β
The resultant vector (we'll call it C) has components:
Cx = Ax + Bx
Cy = Ay + By
The magnitude of the resultant vector is:
C = √(Cx² + Cy²)
And the direction of the resultant vector is:
θ = atan(Cy/Cx)
