A = (1/2) · 27.6 · 30 ·sin23°
= 414 · 0.3907
= 161.7 сm²
Answer:
10¹⁸ ergs
Step-by-step explanation:
From the question,
Using the expression
M =
log(E/10¹³)................. Equation 1
Where M = Richter magnitude of earth quake, E = Energy released in ergs.
Given: M = 4.0
Substitute into equation 1 amd solve for E
4 =
log(E/10¹³)
Log(E/10¹³) = (4×5)/4
Log(E/10¹³) = 5
E/10¹³ = 10⁵
E = 10⁵×10¹³
E = 10⁵⁺¹³
E = 10¹⁸ ergs
The answer is 5 ik beciase i did it
Answer:
<em>The voltage at the middle source is</em> 
Step-by-step explanation:
<u>Voltage Sources in Series</u>
When two or more voltage sources are connected in series, the total voltage is the sum of the individual voltages of each source.
The figure shown has three voltage sources of values:



The sum of these voltages is:

Operating:

We know the total voltage is
, thus:

Equating the real parts and the imaginary parts independently:
4+a=6
1+b=-3
Solving each equation:
a = 2
b = -4
The voltage at the middle source is 
F(x) = 7x − 13
To find f(-x) , just replace x with -x:
f(-x) = 7(-x) - 13
f(-x) = -7x -13