When enough is added to the substance, the solid reaches its point and becomes a liquid

 When enough __energy__ is added to the substance, the solid reaches its _melting_ point and becomes a liquid

Explanation: since energy is being added the substance changes phase into a liquid .

When enough HEAT is added to the substance, the solid reaches its MELTING point and becomes a liquid

Explanation:

Study Island

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

i'm on my way to history not a mistory.