A wave speed in a piano string of linear density 5.0 g/m is 140 m/s. What is the tension in the string?

The tension in the string is 98 newtons.

Explanation:

Since a mecanical wave is propagated throughout the material of the string under tension, which is calculated by using the following formula:

(1)

Where:

- Tension in the string, in newtons.

- Wave speed, in meters per second.

- Linear density, in kilograms per second.

If we know that and , then the tension in the string is:

The tension in the string is 98 newtons.

answer: point c: b. 1/2 potential, 1/2 kinetic, point a: 3/4 of its potential energy, point d or b: 3/4 potential, 1/4 kinetic

explanation: i cant explain. it's difficult to explain.

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table