Question

answer two questions about the highlighted segment. 1) which feature of the graph corresponds to the highlighted segment? choose 1 answer: a midline, b amplitude, c period. 2) what is the meaning of the highlighted segment? choose 1 answer: a the ballerina completes one spin in 0.4 seconds. b the center of the ballerina’s body is 0.4 meters from the ballerina’s knee. c the ballerina completes 0.4 spins in one second. d the center of the ballerina’s body is 0.4 meters from the edge of...

Explanation:

Question 11

• Midline is the horizontal line through the middle of the wave, not a horizontal segment between peaks/troughs.
• Amplitude is the vertical distance from midline to a peak/trough, not horizontal.
• Period is the horizontal length of one full cycle (from peak to peak, trough to trough, etc.), which matches the highlighted horizontal segment (distance between two consecutive troughs or peaks, likely representing one cycle's time). So the highlighted segment corresponds to the period.

• Option A: Period represents the time for one full cycle (spin, in this context). If the highlighted segment (period) is 0.4 seconds, it means one spin takes 0.4 seconds.
• Option B: Amplitude relates to vertical distance (distance from center to a point), not what the horizontal segment (period) means.
• Option C: 0.4 spins per second would be frequency, not period (period is time per spin, frequency is spins per time).
• Option D: Similar to B, amplitude - related, not period - related. So A is correct.

Answer:

C. Period

Question 2