Answer:Geography, Earth Science, Astronomy
Rotation describes the circular motion of an object around its center.
Explanation:
The force equation can easily prove this. F=ma. This states that the force on an object is equal to mass times acceleration. If the mass stays the same and the velocity of the cars increases than that means there is a larger force. This is because in both cases the cars are stopping in almost an instant and the times of the crashes are theoretically identical. Acceleration is the change in velocity over time. If the velocity is higher with the same amount of time than that means there is a higher acceleration. If you plug a higher acceleration into the force equation then you wind up with a higher force and in turn a more damaging collision.
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Answer:
FALSE
Explanation:
Velocity = speed with direction.
Think of speed and direction like rockets and missiles. Rockets are not smart. Missiles are smart. Rockets go in one direction. Missiles can track their targets, they have a specific destination, a specific direction.
Velocity is often used in physics, because its almost useless to know how fast an object is going if you don't know which direction it is going.
Think of it like this. If the Weather man told you a hurricane was traveling at 30 miles an hour, but didn't tell you which direction it was going, you would have no idea where to run, or if it was going to hit you at all. However, if he told you it was going 30 miles an hour to the North, and you were West of it, you would be fine, and wouldn't have to worry.
Answer:
![E=7.28\times 10^6\ J](https://tex.z-dn.net/?f=E%3D7.28%5Ctimes%2010%5E6%5C%20J)
Explanation:
Given that,
Mass of a person, m = 84 kg
The person is standing at a top of Mt. Everest at an altitude of 8848 m
We need to find the gravitational potential energy of the person. We know that the gravitational potential energy is possessed due to the position of an object. It is given by :
E = mgh, g is the acceleration due to gravity
![E=84\ kg\times 9.8\ m/s^2\times 8848\ m\\\\E=7283673.6\ J\\\\E=7.28\times 10^6\ J](https://tex.z-dn.net/?f=E%3D84%5C%20kg%5Ctimes%209.8%5C%20m%2Fs%5E2%5Ctimes%208848%5C%20m%5C%5C%5C%5CE%3D7283673.6%5C%20J%5C%5C%5C%5CE%3D7.28%5Ctimes%2010%5E6%5C%20J)
So, the gravitational potential energy of the person is ![7.28\times 10^6\ J](https://tex.z-dn.net/?f=7.28%5Ctimes%2010%5E6%5C%20J)
Answer:
N = 1036 times
Explanation:
The radial probability density of the hydrogen ground state is given by:
![p(r) = \frac{4r^{2} }{a_{0} ^{3} } e^{\frac{-2r}{a_{0} } }](https://tex.z-dn.net/?f=p%28r%29%20%3D%20%5Cfrac%7B4r%5E%7B2%7D%20%7D%7Ba_%7B0%7D%20%5E%7B3%7D%20%7D%20e%5E%7B%5Cfrac%7B-2r%7D%7Ba_%7B0%7D%20%7D%20%7D)
![p(\frac{a_{0} }{2} ) = \frac{4(\frac{a_{0} }{2} )^{2} }{a_{0} ^{3} } e^{\frac{-2(\frac{a_{0} }{2} )}{a_{0} } }](https://tex.z-dn.net/?f=p%28%5Cfrac%7Ba_%7B0%7D%20%7D%7B2%7D%20%29%20%3D%20%5Cfrac%7B4%28%5Cfrac%7Ba_%7B0%7D%20%7D%7B2%7D%20%29%5E%7B2%7D%20%7D%7Ba_%7B0%7D%20%5E%7B3%7D%20%7D%20e%5E%7B%5Cfrac%7B-2%28%5Cfrac%7Ba_%7B0%7D%20%7D%7B2%7D%20%29%7D%7Ba_%7B0%7D%20%7D%20%7D)
![p(2a_{0} ) = \frac{4(2a_{0}) ^{2} }{a_{0} ^{3} } e^{\frac{-4a_{0} }{a_{0} } }](https://tex.z-dn.net/?f=p%282a_%7B0%7D%20%29%20%3D%20%5Cfrac%7B4%282a_%7B0%7D%29%20%5E%7B2%7D%20%7D%7Ba_%7B0%7D%20%5E%7B3%7D%20%7D%20e%5E%7B%5Cfrac%7B-4a_%7B0%7D%20%7D%7Ba_%7B0%7D%20%7D%20%7D)
![N = 1300\frac{p(2a_{0}) }{p(\frac{a_{0} }{2} )}](https://tex.z-dn.net/?f=N%20%3D%201300%5Cfrac%7Bp%282a_%7B0%7D%29%20%7D%7Bp%28%5Cfrac%7Ba_%7B0%7D%20%7D%7B2%7D%20%29%7D)
![N = 1300\frac{(2a_{0}) ^{2}e^{\frac{-4a_{0} }{a_{0} } } }{(\frac{a_{0} }{2} )^{2} e^{\frac{-a_{0} }{a_{0} } }}](https://tex.z-dn.net/?f=N%20%3D%201300%5Cfrac%7B%282a_%7B0%7D%29%20%5E%7B2%7De%5E%7B%5Cfrac%7B-4a_%7B0%7D%20%7D%7Ba_%7B0%7D%20%7D%20%7D%20%20%7D%7B%28%5Cfrac%7Ba_%7B0%7D%20%7D%7B2%7D%20%29%5E%7B2%7D%20e%5E%7B%5Cfrac%7B-a_%7B0%7D%20%7D%7Ba_%7B0%7D%20%7D%20%7D%7D)
![N = 1300(16) e^{-3}](https://tex.z-dn.net/?f=N%20%3D%201300%2816%29%20e%5E%7B-3%7D)
N = 1035.57
N = 1036 times