What is 3*10^-6 divided by 2.5*10^6 expressed in standard notation?​

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

How would doubling the made of an object change the objects potential energy

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's