Answer: Nuclear, (C)
Explanation: Like many have said over the years, the way nuclear energy and explosions like those of atomic bombs and nuclear power plants are created, by the events of an atom being split.
Answer:
6 beats
If one fork beats once and another twice in the same time period
you would hear 1 beat. (Same for 2 and 3 beats).
Answer:
When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights.
Explanation:
Answer:
2.13 s
Explanation:
Hi!
At t = 0s the rocket is at rest in its platform, so the intial speed is zero. I f the acceleration is A, then the height Y, and the speed V are:
![Y=\frac{A}{2}t^2](https://tex.z-dn.net/?f=Y%3D%5Cfrac%7BA%7D%7B2%7Dt%5E2)
![V=At](https://tex.z-dn.net/?f=V%3DAt)
We nedd to find time T during which the rocket engine provides upward acceleration. We know that:
![64\;m=\frac{A}{2}T^2\\ 60\frac{m}{s} =AT\\](https://tex.z-dn.net/?f=64%5C%3Bm%3D%5Cfrac%7BA%7D%7B2%7DT%5E2%5C%5C%2060%5Cfrac%7Bm%7D%7Bs%7D%20%3DAT%5C%5C)
With these 2 equations we can find A and T (dropping units for simplicity):
![A=\frac{60}{T} \\64 =\frac{30}{T} T^2=30T\\T=\frac{64}{30}\approx 2.13\;s](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B60%7D%7BT%7D%20%5C%5C64%20%3D%5Cfrac%7B30%7D%7BT%7D%20T%5E2%3D30T%5C%5CT%3D%5Cfrac%7B64%7D%7B30%7D%5Capprox%202.13%5C%3Bs)