Answer:
<em>The energy of an individual photon that comes out of the laser pointer is 1.91 eV</em>
Explanation:
The energy of a photon can be obtained using the expression below
E = hc/λ
where E is the energy;
h is the Planck's constant = 6.626 x 10-34 Js;
c is the speed of light = 3.00 x m/s (speed of light);
λ is the wavelength = 650 nm =650 x m.
E = (6.626 x 10-34 Js) x (3.00 x m/s) /650 x m
E = 3.058 x J
1 joule = 6.242 x eV
3.058 x J = 3.058 x J x 6.242 x eV = 1.91 eV
Therefore the energy of an individual photon that comes out of the laser pointer is 1.91 eV
Explanation:
Visible light is a very part of electromagnetic spectrum. We can see the visible region of the electromagnetic spectrum.
The frequency and the wavelength has an inverse relationship.
For example, the red light has large wavelength and low frequency. Violet has a short wavelength and higher frequency.
The frequency range of visible region is from 400 nm to 700 nm.
Answer:
rock will hit the ground at the same time.
Explanation:
given,
Jan throws rock vertically downward with some initial velocity(v).
Len throw rock at an angle of 30° with initial velocity(2 v) twice than the Jan
to find whose rock will hit the ground first.
it is given that rock is identical
now,
vertical component of velocity of the rock
= v₂ sin θ
= v₂ sin 30°
=
= v
hence the vertical velocity of the Len is same as that of Jan so the rock will hit the ground at the same time.
Answer:
A tornado can, surprisingly, cause a supercell, so the answer would be C.) tornado
Explanation:
When cold, dry, and polar air meet warm, moist tropical air, the atmosphere becomes unstable causing a supercell.
Final Answer:
C.) tornado
Afterthought:
<em>Please give BRAINLEST!</em>
Thanks,
-johannelbekian