A playground merry-go-round of radius r = 2.00 m has a moment of inertia = 250 ⋅ , and is rotating at 10.0 rev/min about a frictionless vertical axle. Facing the axle, a 20.0-kg child hops onto the merry-go-round, and manages to sit down on the edge. What is the new moment of inertia of the merry-go-round?

Explanation:

We are given that

Radius,r=2 m

Moment of inertia,I=250

Angular velocity,

Mass of child,m=20 kg

We have to find the new moment of inertia of the merry go round.

New moment of inertia ,

Using the formula

Hence, the new moment of inertia of the merry -go-round=

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19