Answer:
m
Explanation:
At 10am, the minute hand and hour hand are ' 2 hours apart', since the minute hand is at 12pm and hour hand is at 10am.
Angle between the two hands = 2/12 * 360
= 60°
Arc Length = 
= 
I believe the answer is the second option.
F~1/r²
doubling the distance r, Decreases the force by ¼
Answer:
The number of molecules displaced in a vibration makes the amplitude of a sound.