Answer:
(C) ln [Bi]
Explanation:
Radioactive materials will usually decay based on their specific half lives. In radioactivity, the plot of the natural logarithm of the original radioactive material against time will give a straight-line curve. This is mostly used to estimate the decay constant that is equivalent to the negative of the slope. Thus, the answer is option C. 
 
        
                    
             
        
        
        
Answer:
Viscosity is notated using the common classification “XW-XX”. The number preceding the “W” (winter) rates the oil's flow (viscosity) at zero degrees Fahrenheit (-17.8 degrees Celsius). The lower the number, the less the oil thickens in cold weather.
 
        
             
        
        
        
Answer:
Check the explanation
Explanation:
Kindly check the attached image below to see the step by step explanation to the question above.
 
        
             
        
        
        
Answer:
a) 28 stations
b) Rp = 21.43
E = 0.5
Explanation:
Given:
Average downtime per occurrence = 5.0 min
Probability that leads to downtime, d= 0.01
Total work time, Tc = 39.2 min
a) For the optimum number of stations on the line that will maximize production rate. 
Maximizing Rp =minimizing Tp 
Tp = Tc + Ftd
 
 
At minimum pt. = 0, we have:
dTp/dn = 0
 
Solving for n²:
 
 
The optimum number of stations on the line that will maximize production rate is 28 stations. 
b) 
 
Tp = 1.4 +1.4 = 2.8
The production rate, Rp = 
 
The proportion uptime,