The Answer is A becuase the piano moving up is is going in a positive way whe it stops the forces are equal then when it falls the forces are negative
Wolffia
I think I know that is the smallest flowering plant, but I don’t know about just the smallest plant.
Answer:
255.4 N/m
Explanation:
We can consider the system eyeball-attached to the musculature as a mass-spring system in simple harmonic motion, whose frequency of oscillation is given by

where in this case, we know:
f = 29 Hz is the frequency of oscillation
k is the spring constant, which is unknown
m = 7.7 g = 0.0077 kg is the mass of the eyeball
Solving the equation for k, we find the spring constant of the musculature attached to the eyeball:
