Mass always stays the same therefore it can’t be c and d. Volume stays the same because she is not removing anything. Therefore it is a
a mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. while waves can move over long distances, the movement of medium transmission-the material- is limited. again, the oscillating material does not move far away from its initial equilibrium position ;)
Answer:

Explanation:
When the screw is turned by two turns then change in the length of the wire is given as




now we know by the formula of Young's modulus

so we have



Esta disciplina nos permite saber y comprender cómo es el conjunto de todo lo que rodea al planeta tierra. Todas las civilizaciones que han existido a lo largo de la historia han tenido una visión de conjunto sobre el universo.
That was his student, Johannes Kepler.