Explanation:
It is given that,
The wavelength of red helium–neon laser light in air is,
(a) Frequency,
(b) Let shows its wavelength in glass that has an index of refraction of 1.51,
(c) Let is its speed in the glass.
Hence, this is the required solution.
So first we have to solve for the total momentum of the entire system. We can do this by solving momentum for the first train. The equation for momentum is p=mv, where "p" is momentum.
Total momentum is
When the first train comes to a complete stop, it is an elastic collision. We can use conservation of momentum to solve for the velocity of the second train.
If they stick completely, then it is an inelastic collision. Here we have to combine the mass of the two trains and solve for the velocity.
Finally, if the train is 20m/s then what is the velocity of the first train. Just like before, we can solve using conservation of momentum.
The best demonstration that applies to Newton's Third Law of motion would be D) When you walk your foot pushes down on the ground while the ground pushes back on your foot.
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Newton's Third Law states that for every action, there is an equal and opposite reaction. This is actually explains that forces come in pairs and forces are an interaction between two objects. As per the correct option given in the question explains Newton’s Third Law.
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When you walk your foot (say object A) pushes down on the ground while the ground (say object Q) pushes back on your foot with the same force but in the opposite direction.
Absolutely not. You can have a piece of wood and water with the same dimensions, but dimensions Won't matter
Answer:
12m/s²
Explanation:
Two balls with equal masses and speed engage in a head-on elastic collision. Since the balls of equal mass are moving at equal and opposite speeds, the total linear momentum of the system is zero.
Therefore, the second ball experience an acceleration of 12m/s² at the same time.