According to Newton's second law of motion, the force of the object applied to accelerate is equal to the mass of the object multiplied by the acceleration. However in reality, air friction are still considered. In this case, if the density of air is 0, hence vacuum and air is negligible, then mass and radius is proportional to the acceleration.
<span>We see only one side of the moon from earth because the moons period of rotation and revolution are equal. The moon rotates around the Earth at the exact speed as it rotates around its won axis (revolution). The result is: the same side of the moon is facing the Earth. If the moon doesn't rotate on it's axis we on the Earth would see all of the sides of the Moon.</span>
C is the answer Because chemical energy Create heat And thermal power relates to heat energy
Answer:
a) 6.028*10^10 m/s^2
b)2.156*10^-5 s
c)14.01 m
Explanation:
Hello!
I will not consider relativistic efects since the velocity of the proton is 1% of the velocity of ligth.
In order to find the acceleration we need to calculate first the force, this is done by multiplying the electric field times the charge of the proton (1e=1.6*10^-19)
Since the mass of the proton is 1.6726219 × 10^-27 kilograms
The acceleration it suffers due to the electric field is:
Since the proton accelerates from rest, the velocity as a function of time is given by:
So
Finally, the length traveled by the proton in that interval is given by:
B, the light should be travelling out of the optically dense medium to the optically less dense medium.
were d to read "... is greater than the critical angle" I'd agree with it. But it doesn't read that way ...
Which leaves b as the only one which I think is true. Which I find a bit odd.
Out of interest, TIR is often used in piping light down optical fibres, among many other applications.