Help pls 15 points!!
1 answer:
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Answer:
Option (A)
Step-by-step explanation:
It has been given in this question that sign telling path has a 2% grade.
2% grade means a rise of 2 meters for a horizontal change of 100 m (As given in the figure attached).
All the trigonometric ratios for the angle θ between the path and the horizontal are,
Sinθ =
Cosθ =
tanθ =
Since measures of the opposite side and adjacent sides are given
Therefore, tangent ratio will be applied to get the measure of the angle,
tanθ =
θ =
Option (A) will be the answer.
Answer:
Richter scale is a good way to talk about how strong an earthquake is. It is also easy to compare two earthquakes using the Richter scale.
Generally, earthquakes are estimated to be under
10
on the Richter scale.
Below is the formula for comparing two earthquakes.
M2-M1=log(I2-I1)
You can check out how this formula is derived.
Compute the magnitude of an earthquake
Given the intensity of two earthquakes and the magnitude of one of them, we can find the magnitude of the other earthquake. For example:
Earthquake
A
is
15
times stronger than earthquake
B
. Earthquake
B
is estimated to be
2.3
on the Richter scale. What is Earthquake
A
on the Richter scale?
M_A-M_B=log(I_A/I_B)
M_A-2.3=log(15)
M_A=log(15)+3.5
M_A=3.5
How much stronger is this earthquake comparing to that?
When given the magnitudes of
2
earthquakes, we can figure out how much stronger one earthquake is comparing to the other one. For example:
On the Richter scale, earthquake
A
is estimated to be
3
and earthquake
B
is estimated to be
1.5
.
How much stronger is earthquake
A
?
32
times
15
times
57
times
2
times
Step-by-step explanation:
The picture is the explanation......
And please comment if it helps you
