Hydroelectric power. That's just the term for electricity gained by using water, think of a water mill.
Answer:
Li has less mass and therefore less inertia, so he can change his motion more easily than Raj.
Explanation:
Inertia describes the resistance of an object to any change in its state of motion, and it depends on the mass of the object only. In particular:
- if an object has a large inertia (large mass), then it is more difficult to change its state of motion (i.e. to put it in motion, or to slow it down, or to change its direction of motion)
- if an object has small inertia (small mass), then it is more easy to change its state of motion
In this problem, Li has less mass than Raj, so he has less inertia, therefore he can change his motion more easily than Raj.
Answer:
1.034m/s
Explanation:
We define the two moments to develop the problem. The first before the collision will be determined by the center of velocity mass, while the second by the momentum preservation. Our values are given by,
![m_1 = 65000kg\\v_1 = 0.8m/s\\m_2 = 92000kg\\v_2 = 1.2m/s](https://tex.z-dn.net/?f=m_1%20%3D%2065000kg%5C%5Cv_1%20%3D%200.8m%2Fs%5C%5Cm_2%20%3D%2092000kg%5C%5Cv_2%20%3D%201.2m%2Fs)
<em>Part A)</em> We apply the center of mass for velocity in this case, the equation is given by,
![V_{cm} = \frac{m_1v_1+m_2v_2}{m_1+m_2}](https://tex.z-dn.net/?f=V_%7Bcm%7D%20%3D%20%5Cfrac%7Bm_1v_1%2Bm_2v_2%7D%7Bm_1%2Bm_2%7D)
Substituting,
![V_{cm} = \frac{(65000*0.8)+(92000*1.2)}{92000+65000}](https://tex.z-dn.net/?f=V_%7Bcm%7D%20%3D%20%5Cfrac%7B%2865000%2A0.8%29%2B%2892000%2A1.2%29%7D%7B92000%2B65000%7D)
![V_{cm} = 1.034m/s](https://tex.z-dn.net/?f=V_%7Bcm%7D%20%3D%201.034m%2Fs)
Part B)
For the Part B we need to apply conserving momentum equation, this formula is given by,
![m_1v_1+m_2v_2 = (m_1+m_2)v_f](https://tex.z-dn.net/?f=m_1v_1%2Bm_2v_2%20%3D%20%28m_1%2Bm_2%29v_f)
Where here
is the velocity after the collision.
![v_f = \frac{m_1v_1+m_2v_2}{m_1+m_2}](https://tex.z-dn.net/?f=v_f%20%3D%20%5Cfrac%7Bm_1v_1%2Bm_2v_2%7D%7Bm_1%2Bm_2%7D)
![v_f = \frac{(65000*0.8)+(92000*1.2)}{92000+65000}](https://tex.z-dn.net/?f=v_f%20%3D%20%5Cfrac%7B%2865000%2A0.8%29%2B%2892000%2A1.2%29%7D%7B92000%2B65000%7D)
![v_f = 1.034m/s](https://tex.z-dn.net/?f=v_f%20%3D%201.034m%2Fs)
12 protons in the nucleus