1) Johnny completing the spring lab, and makes 12 waves in 10 seconds. What is the

frequency of the waves Johnny makes?

1.2 Hz

Explanation:

Frequency: This can be defined as the number of cycles completed in one seconds. The unit of frequency is Hertz (Hz)

From the question above,

f = N/t Equation 1

Where f = frequency, N = number of wave or cycle completed by Johnny, t = time take to complete the waves.

Given: N = 12 waves, t = 10 s

Substitute into equation 1

f = 12/10

f = 1.2 Hz

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luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.