Physics student recorded the movement of a spring apparatus for 10 seconds. She displaced the spring 5 inches up (positive displacement) from its resting (midline=0) position and released it at the instant (t=0) she began recording. The spring moved down (negative displacement) and back up several times. It took 10 seconds total to bounce from top to bottom and back up to its starting, top position 20 times (20 complete cycles) during the experiment. The total distance from bottom to top was 10 inches

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours