A child of mass 51.4 kg sits on the edge of a merry-go-round with radius 2.1 m and moment of inertia 167.739 kg m2 . The merrygo-round rotates with an angular velocity of 1.7 rad/s. The child then walks towards the center of the merry-go-round and stops at a distance 0.819 m from the center. Now what is the angular velocity of the merry-go-round

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.

Which of hubble’s discovery support the big bang theory

How to know which equation of motion to use where?explain