B. Engineers perform lots of trials.
Answer:
A semiconductor acts like an ideal insulator at absolute zero temperature that is at zero kelvin. It is because the free electrons in the valence band of semiconductors will not carry enough thermal energy to overcome the forbidden energy gap at absolute zero.
Answer:
0.5232
Explanation:
the cardinal and the baseball has the same kinetic energy


![[4.0X 10^{-2} ]v_{c} ^{2} = [0.146]v_{b} ^{2}](https://tex.z-dn.net/?f=%5B4.0X%2010%5E%7B-2%7D%20%5Dv_%7Bc%7D%20%5E%7B2%7D%20%3D%20%5B0.146%5Dv_%7Bb%7D%20%5E%7B2%7D)


Ratio of momentum


B. velocity is the speed in any given direction.