an object of a mass 3 kg is inside a vertical drum of radius 2 m that is rotating at an angular w= 5/ rad/s what is the tangential speed of the object?

Which accurately compares concave and convex lenses?

Argon, neon, and xenon are examples of

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?