An object of mass m = 5.0 kg hangs from a cord around a light pulley: the length of the cord between the oscillator and the pulley is l = 2.0 m. when the oscillator is set to a frequency of 150 hz, a standing wave with six loops is formed. what must be the linear mass density of the cord?

Explanation:

When a standing wave is formed with six loops means the normal mode of the wave is n=6, the frequency of the normal mode is given by the expression:

Where is the length of the string and the velocity of propagation. Use this expression to find the value of .

The velocity of propagation is given by the expression:

Where is the desirable variable of the problem, the linear mass density, and is the tension of the cord. The tension is equal to the weight of the mass hanging from the cord:

With the value of the tension and the velocity you can find the mass density:

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.