A10.0 kg box is pulled along a horizontal surface by a force of 40.0 n applied at a 30.0° angle. if the coefficient of kinetic friction is 0.30. calculate the acceleration.

Explanation:

Given

mass of box

Force applied

inclination of force (w.r.t horizontal)

coefficient of kinetic friction

Net Normal reaction on the box is

Friction force

force which is moving the box

Net force on the block

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.