Answer:
I think it's 2 the photo is hard to tell what they are exactly talking about.
It does work or increases thermal energy
I believe that you would weigh around 68 or 69 N, or 7 kilograms.
Answer:
m = 1 kg
Explanation:
Given that,
The force constant of the spring, k = 39.5 N/m
The frequency of oscillation, f = 1 Hz
The frequency of oscillation is given by the formula as formula as follows :

So, the mass that is attached to the spring is 1 kg.