Answer:
False
Explanation:
A Larger pulse with more energy means that the wave has a large amplitude. As in the given question, both the waves are travelling in the same medium, hence their speeds will remain the same and therefore the larger pulse will not overtake the smaller pulse. Remember the amplitude of a wave does not affect the speed at which the wave travels.
The nucleus of an atom is about 10-15 m in size; this means it is about 10-5 (or 1/100,000) of the size of the whole atom. A good comparison of the nucleus to the atom is like a pea in the middle of a racetrack. (10-15 m is typical for the smaller nuclei; larger ones go up to about 10 times that.)
The time taken by the swimmer was 1 hour.
Why?
Since the swimmer is maintaining an angle of 150° while he was swimming, there were two components of the speed (horizontal and vertical). If we want to calculate the time taken by him to cross the river, we need to calculate the vertical speed and consider that the flow's speed is compensated by his horizontal speed.
We can calculate both components of the speed using the following formula:
![HorizontalSpeed=Speed*Cos(150\°)\\\\VerticalSpeed=Speed*Sin(150\°)](https://tex.z-dn.net/?f=HorizontalSpeed%3DSpeed%2ACos%28150%5C%C2%B0%29%5C%5C%5C%5CVerticalSpeed%3DSpeed%2ASin%28150%5C%C2%B0%29)
Now, calculating we have:
![HorizontalSpeed=2\frac{Km}{h} *Cos(150\°)=-\sqrt{3} \frac{Km}{h} \\\\VerticalSpeed=2\frac{Km}{h} *Sin(150\°)=1\frac{Km}{h}](https://tex.z-dn.net/?f=HorizontalSpeed%3D2%5Cfrac%7BKm%7D%7Bh%7D%20%2ACos%28150%5C%C2%B0%29%3D-%5Csqrt%7B3%7D%20%5Cfrac%7BKm%7D%7Bh%7D%20%5C%5C%5C%5CVerticalSpeed%3D2%5Cfrac%7BKm%7D%7Bh%7D%20%2ASin%28150%5C%C2%B0%29%3D1%5Cfrac%7BKm%7D%7Bh%7D)
Therefore, we have that the horizontal speed is compesating the flow's speed while his vertical speed is used to cross the river which is 1 Km wide.
Hence, we have that the tame taken is:
![Time=\frac{RiverWidth}{VerticalSpeed}=\frac{1Km}{1\frac{Km}{h} } =1h](https://tex.z-dn.net/?f=Time%3D%5Cfrac%7BRiverWidth%7D%7BVerticalSpeed%7D%3D%5Cfrac%7B1Km%7D%7B1%5Cfrac%7BKm%7D%7Bh%7D%20%7D%20%3D1h)
Have a nice day!
Answer:
11.6m
Explanation:
should be somewhere around 11.6 because
a²+b²=c²
so 6²+10²=136
now find the square root √136
=11.6
11.6²=136