What is 286.6mm as full decimals number with standard Units​

What determines the amount of inertia an object has

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?