(a) 
The radiation pressure exerted by an electromagnetic wave on a surface that totally absorbs the radiation is given by
where
I is the intensity of the wave
c is the speed of light
In this problem,
and substituting 
, we find the radiation pressure
(b) 
Since we know the cross-sectional area of the laser beam:
starting from the radiation pressure found at point (a), we can calculate the force exerted on a tritium atom:
And then, since we know the mass of the atom
we can find the acceleration, by using Newton's second law:
<span>Debido a que la fuerza es constante, a medida que la masa aumenta, la aceleración disminuye. Por lo tanto, la mayor aceleración sería a1.</span><span>Utilicé Google traductor, lol. Sin embargo, espero que esto ayude.</span>
If an object changes the speed of <u>direction</u>, its velocity also changes. Any change in <u>velocity</u> results in acceleration.
Hope that helps!
Answer:
The correct options are:
B) They have the same wave speed as visible light
D) They have a lower frequency than gamma rays.
Explanation:
B) Ultraviolet rays, commonly known as UV rays, are a type of electromagnetic ways. As electromagnetic waves, in the layman's term, are all kinds of life that can be identified, all electromagnetic waves (UV rays, visible light, infrared, radio etc) all travel with the same velocity, that is the speed of light, given as v = 3 × 10⁸ m/s
D) The frequency of all electromagnetic rays can be found by electromagnetic spectrum (picture attached below).
We can clearly see in the picture that the frequencies of UV rays lie at about 10¹⁵ - 10¹⁶ Hz which is lower than the frequency of Gamma ray, which lie at about 10²⁰ Hz.
Ecstasy pills look a lot like candy. They are small, brightly colored, and stamped with funny images or clever symbols. They look like harmless little bits of nothingness people might swallow by the handful after a night of trick-or-treating. In reality, each ecstasy pill can do a great deal of damage. Hope this helped!
