Answer:
the index of refraction of the second medium is lower
Explanation:
take an exaple of a light ray from air to water that is optically denser the ray is refracted to the normal thus lowering its index of refraction
True!!!!!!!!!!!!!!!!!!!!!
Answer:I have to say 56
Explanation: because it is going up by 8
Answer:
Repulsion is the sure test for magnetism because it occurs only when two like poles of a magnet exist while the attraction phenomenon can occur between two unlike poles of a magnet and also between a magnet and a magnetic material means if there are two magnets they will attract each other and suppose if one material
Answer:
Explanation:
It is assumed that pole vaulter began running at a height of zero. The physical model is formed after the Principle of Energy Conservation:
The previous expression is simplified and required height is found:
![h_{B} = \frac{1}{2 \cdot (9.807\, \frac{m}{s^{2}} )} \cdot [(10\, \frac{m}{s} )^{2}-(1.3\, \frac{m}{s} )^{2}]](https://tex.z-dn.net/?f=h_%7BB%7D%20%3D%20%5Cfrac%7B1%7D%7B2%20%5Ccdot%20%289.807%5C%2C%20%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D%20%29%7D%20%5Ccdot%20%5B%2810%5C%2C%20%5Cfrac%7Bm%7D%7Bs%7D%20%29%5E%7B2%7D-%281.3%5C%2C%20%5Cfrac%7Bm%7D%7Bs%7D%20%29%5E%7B2%7D%5D)
