2 because when you are doing this it causes friction Which then cause the balloon to stick
~dany-ley
The spring constant is 
Explanation:
For an object in a simple harmonic motion, the acceleration of the object is related to the displacement by

where
a is the acceleration
is the angular frequency
x is the displacement
The angular frequency is defined as

where
k is the spring constant
m is the mass
Substituting the second equation into the first one, we get

In this problem we have
m = 1 g = 0.001 kg
And at t=0,
x = 43.75 cm
a = -1.754 cm/s
Therefore, we can re-arrange the equation above to find the spring constant:

#LearnwithBrainly
A plane mirror doesn't change the apparent size or shape of things.
-- If the meter stick is held parallel to the mirror, or is lying on the mirror,
then its image in the mirror is 1 meter long.
-- If the meter stick is held perpendicular to the mirror, or is standing on
the mirror, or pointing directly at it, then its image in the mirror has no length.
Answer:
7×160=1120kj so,1120kj=1.12j.
Explanation:
Energy is equal to force times distance,so we add all the distance and we multiply them with the total force of the spring to get the answer. However, the answer is in kilojoules so we have to change it in to joules by dividing the answer into joules by 1000..