What is this about we need more information
Well, figures for efficiency vary a lot, but according to Bicycling Science it’s lubrication that matters most – lubing a dry chain can add 5% to the efficiency.
More interestingly (and I hadn’t read this bit in the book before) it varys a lot depending on gear ratio – bottom gear (22-28) is 99% efficient, top gear (42-11) is 88%. That’s a big difference
Answer:
800 g
Explanation:
We can express the decay of I-37 using the formula:
- Final Mass = Initial Mass *
![0.5^{\frac{Time}{Half-Life} }](https://tex.z-dn.net/?f=0.5%5E%7B%5Cfrac%7BTime%7D%7BHalf-Life%7D%20%7D)
We <u>input the data</u>:
- 25 g = Initial Mass *
![0.5^{(\frac{40.35}{8.07})}](https://tex.z-dn.net/?f=0.5%5E%7B%28%5Cfrac%7B40.35%7D%7B8.07%7D%29%7D)
And <u>solve for Initial Mass</u>:
- 25 g = Initial Mass *
![0.5^{5}](https://tex.z-dn.net/?f=0.5%5E%7B5%7D)
- 25 g = Initial Mass * 0.03125
Meaning that out 800 grams of I-37, only 25 will remain after 40.35 days.
How fast it changes position in time is the objects speed