Answer:
The age of the bones is approximately 14172 years.
Explanation:
The age of the bones can be determinated using the following decay equation:
(1)
<u>Where:</u>
N(t): is the quantity of C-14 at time t
No: is the initial quantity of C-14
λ: is the decay rate
t: is the time
First, we need to find λ:
<u>Where:</u>
t(1/2): is the half-life of C-14 = 5730 y
Now, we can calculate the age of the bones by solving equation (1) for t:
We know that the bones have lost 82% of the C-14 they originally contained, so:
Therefore, the age of the bones is approximately 14172 years.
I hope it helps you!
Answer:
cout<<"''<<user_word<<"' "<<user_number;
Explanation:
The above question was answered using C++ programming language.
The keyword cout represents print and it carries out print operation only.
It prints all variable in front of it.
Assume the values of user_word and user_number to be Charles and 20, respectively.
The output of the above instruction would be
'Charles' 20 just as it is in the sample output in the question.
In java programming language, it is
System.out.print("'"+user_word+"' "+user_number);
In Qbasic, it is
PRINT "'"+user_word+"' "+ user_number
Answer:
Optimal aspect ratio = 1
Explanation:
From Chvorinov's Rule,
![T = c [\frac{volume}{surface are}]^n](https://tex.z-dn.net/?f=%20T%20%3D%20c%20%5B%5Cfrac%7Bvolume%7D%7Bsurface%20are%7D%5D%5En%20)
Where
T = solidification time
c = mold constant
For the riser to have the longest solidification time:
We have: D = h
![A = pi Dh[\frac{2pi D^2}{4}] = 1.5D^2 pi](https://tex.z-dn.net/?f=%20A%20%3D%20pi%20Dh%5B%5Cfrac%7B2pi%20D%5E2%7D%7B4%7D%5D%20%3D%201.5D%5E2%20pi)
Therefore,
To have to longest solidification time, D = h
Therefore the best aspect ratio would be,
Answer:
Answer to the following question is as follows;
Explanation:
The amount of alcohol consumption can be influenced by a variety of things, including food.
The proportion and pace at which alcohol reaches the circulation is affected by drinking rate, body mass, and the size of the beverage. Alcohol enters your system as soon as it reaches that first sip, as per the National Institute on Drug Abuse and Alcoholism. After 10 minutes, the results are noticeable.
Solution :
Given :
The power of the air‐conditioning (AC) unit is , W = 0.434 kW
The coefficient of performance or the COP of the air‐conditioning (AC) unit is given by = 6.22
Therefore he heat removed is given by , 
Now if the electricity is valued at 0.10 dollar per kW hour, then the operating cost of the air conditioning unit in 24 hours is given by = 0.10 x 2.7 x 24
= 6.48
Therefore the operating cost = $ 6.48 for 24 hours.
