From the calculation, the wavelength of the waves is about 264 nm and belongs to the ultraviolet spectrum.
<h3>What is photoelectric effect?</h3>
The term photoelectric effect can be used to describe the loss of electron from the surface of a metal. Given that; KE = E - W, where;
KE = kinetic energy of the emitted photoelectron
E = energy of the photon
W = work function of the metal
λ= hc/E
λ=
λ= or 264 nm
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it prevents the current from passing through properly causing a surplus of voltage
Answer:
Explanation:
The missing question her is: What is the change in momentum of the baseball?
According to the Impulse-Momentum Theorem, we have:
Where:
is the exerted force
is the time interval
is the change in momentum
So, in the case of the bat and the ball we have:
For the bat:
(1)
For the ball:
(2)
Since is the same for both the bat and the ball, their impulses are equal in magnitude but in opposite direction according to Newton's 3rd law of motion. Hence:
(3)
Then:
(4)
Where:
Being , ,
Being
Then (4) is rewritten as:
(5)
Since :
(6)
Isolating :
(7)
(8)
(9)
Now, the change in momentum of the baseball is:
(10)
Substituting (9) in (10):
(11)
Finally:
This is the change in momentum of the baseball. Note it is negative because its initial velocity is greater than its final velocity
Nicolaus copernicus was a renaissance-era mathematician and astronomer who formulated a model of the universe that placed the sun rather than the earth at the center of the universe , in all likelihood indepently of aristarchus of samos who had formulated such a model some eighteen centuries earlier.
Answer:
down below
Explanation:
Image 1- <u>wheels of train</u> showing both translatory motion as well as rotatory motion.
Image 2- <u>rotation of ball</u> shows both rotatory motion as well as translatory motion.
Image 3- <u>the earth rotates</u> about its axis, same time it revolves around the sun thus showing both rotatory motion and curvilinear motion in a fixed time. (perodic motion)
Image 4- while cutting wood, <u>the</u>
<u>carpenter's</u> <u>saw</u> has both
translatory motion and oscillatory
motion, as it moves down while
oscillating.