Question

1. what device was used to determine the constant g?

particle - wave detector
torsion balance
gravity device
tension balance

Explanation:

The torsion balance was used to determine the gravitational constant \(G\). In the Cavendish experiment, a torsion balance was employed. The torsion balance consists of a light rod with two small lead spheres attached at its ends, suspended by a thin wire. When two large lead spheres are placed near the small spheres, the gravitational force between them causes the rod to twist, and the angle of twist is measured. Using the properties of the torsion (related to the wire's elasticity) and the known masses and distances, the value of \(G\) can be calculated. The particle - wave detector is related to quantum mechanics (particle - wave duality), the gravity device is a very general and non - specific term, and tension balance is not the correct term for the device used to measure \(G\).

Answer:

torsion balance