The temperature will remain constant, at around 100 C, and the volume of water in the pot will decrease, as it turns into steam and floats away from the pot.
The Correct answer is (B), Because the reject each other.
Answer:
The speed is 
.
(a) is correct option.
Explanation:
Given that,
Potential difference 
Speed 
If it were accelerated instead
Potential difference 
We need to calculate the speed
Using formula of initial work done on proton
We know that,
Put the value into the formula
....(I)
If it were accelerated instead through a potential difference of 
, then it would gain a speed will be given as :
Using an above formula,
Put the value of 
Hence, The speed is .
The impulse is exactly the change in momentum,
and they have the same units.
The impulse imparted to the bobsled by the air
resistance is
(750 - 1500) = -750 kg-m/s.
It's negative because it reduced the bobsled's momentum.
If the impulse had come from a rocket engine on the back of
the bobsled, then it would have been a positive impulse.
<h2>
Answer: The Photoelectric Effect</h2>
Light can be considered as a wave or as particles, in this context Einstein proposed that light behaves like a stream of particles called <u>photons</u> with an energy, in order to correctly explain the photoelectric effect.
This fenomenom consists in the emission of electrons (electric current) that occurs when light falls on a metal surface <u>under certain conditions.
</u>
So, if we consider light as a stream of photons and each of them has energy, this energy is able to pull an electron out of the crystalline lattice of the metal and communicate, in addition, a <u>kinetic energy</u>.
This means the photoelectric effect can only be explained based on the corpuscular model of light, that is, light is quantized.
