Question

mechanical waves can be transverse or longitudinal. which of the following is the only medium a transverse mechanical wave can travel through? a solid aluminum b outer space c liquid water d helium gas

Explanation:

Transverse mechanical waves require a medium with shear - modulus to propagate. Solids have a well - defined shear modulus. Liquids and gases do not support shear forces well and outer space is a vacuum with no medium for mechanical waves. Solid aluminum is a solid, while outer space is a vacuum, liquid water is a liquid and helium gas is a gas.

Answer:

A. Solid Aluminum