Suppose that the moment of inertia of a skater with arms out and one leg extended is 3.3 kg⋅m2 and for arms and legs in is 0.90 kg⋅m2 . If she starts out spinning at 4.2 rev/s , what is her angular speed (in rev/s) when her arms and one leg open outward?

Aregular polygon has angkes of size 150° each.how many side has the polygon

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .