Answer: 83.17
Explanation:
By definition, the dB is an adimensional unit, used to simplify calculations when numbers are either too big or too small, specially in telecommunications.
It applies specifically to power, and it is defined as follows:
P (dB) = 10 log₁₀ P₁ / P₂
Usually P₂ is a reference, for instance, if P₂ = 1 mW, dB is called as dBm (dB referred to 1 mW), but it is always adimensional.
In our question, we know that we have a numerical ratio, that is expressed in dB as 19.2 dB.
Applying the dB definition, we can write the following:
10 log₁₀ X = 19.2 ⇒ log₁₀ X = 19.2 / 10 = 1.92
Solving the logarithmic equation, we can compute X as follows:
X = 10^1.92 = 83.17
X = 83.17
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Answer: Add more cells in series.
Explanation:
Adding more cells in series will add voltage which will increase the power.
Answer:
The program to this question as follows:
Program:
def isEvenPositiveInt(x): #defining method isEvenPositiveInt
if x>0: #checking number is positive or not
if x%2==0: #check true condition
return True #return value True
else:
return False #return value False
return False #return value False
print(isEvenPositiveInt(24)) #calling method and print return value
print(isEvenPositiveInt(-24)) #calling method and print return value
print(isEvenPositiveInt(23)) #calling method and print return value
Output:
True
False
False
Explanation:
In the above Python program, a method "isEvenPositiveInt" is defined, that accepts a variable "x" as its parameter, inside the method a conditional statement is used, which can be described as follows:
- In the if block the condition "x>0" is passed, that check value is positive, if this condition is true, it will go to another if block.
- In another, if block is defined, that checks the inserted value is even or not, if the value is even it will return "true", otherwise it will go to the else part, that returns "false".
