Let k be the spring constant. Then you have
188=k*21.8
k=188/21.8=8.62,
In the second part you use
m g= k x
x=m g/k= 38/8.62=4.4cm
4.4 cm is the answer
Answer:
Nucleus
- Rutherford predicted that an atom had a dense core called a nucleus.
An astronomer and also a cosmologist