Three solid, uniform flywheels, each of mass 65.0 kg and radius 1.47 m, rotate independently around a common axis. two of the flywheels rotate in one direction at 3.83 rad/s; the other rotates in the opposite direction at 3.42 rad/s. calculate the magnitude of the net angular momentum of the system.

297.77 kg m^2 / s

Explanation:

mass of each flywheel, m = 65 kg

radius of flywheel, r = 1.47 m

ω1 = 3.83 rad/s

ω2 = - 3.42 rad/s

Moment of inertia, I = 1/2 mr² = 0.5 x 65 x 1.47 x 1.47 = 70.23 kg m^2

Angular momentum is defined as

L = I x ω

Net angular momentum

L = 2 x I x ω1 - I x ω2

L = 2 x 70.23 x 3.83 - 70.23 x 3.42

L = 537.96 - 240.19

L = 297.77 kg m^2 / s

Thus, the angular momentum is 297.77 kg m^2 / s.  

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.