The local meteorologist claims that the temperature is going to steadily drop over the next 4 hours. If the temperature changes
2 answers:
Answer:
-7 ºF each hour
Explanation:
The problem says that in a total amount of 4 hours the total temperature drop is 28 ºF. We are asked to obtain how many Fahrenheit degrees drop each hour. To obtain the temperature, we just need to divide the total drop temperature by the total amount of time.
The result is 7 ºF. The minus sign is simply written to depict a decrease in temperature.
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Answer:
24.348mm
Explanation:
NB: I'll be attaching pictures so as to depict missing mathematical expressions or special characters which are not easily found on keyboards
K = d / €^n
Note : d represents the greek alphabet epsilion.
K = 345 / 0.02⁰.²² = 816mPa
The true strain based upon the stress of 414mPa =
€= (€/k)^1/n = (414/816)¹/⁰.²² = 0.04576
However the true relationship between true strain and length is given by
€ = ln(Li/Lo)
Making Li the subject of formula by rearranging,
Li = Lo.e^€
Li = 520e⁰.⁰⁴⁵⁷⁶
Li = 544.348mm
The amount of elongation can be calculated from
Change in L = Li - Lo = 544.348 - 520 change in L = 24.348mm.
