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what is the period of a wave if the wavelength is 100m and the speed of 200m/s
a. 100s
b. 200,000s
c. 0.5s
d. 2s

C

Step-by-step explanation:

The formula we use to solve this would be:  

Where

T is the period in seconds

is the wavelength in m, and

v is the speed of the wave in m/s

We have equal to 100, and v = 200 m/s. Plugging these into the equation, we get the period:

C is the right answer.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq