You travel 10 m north and then stop for lunch and

continued another 30 m north. you then turn around and

travel 40 m south. what is your displacement?

Zero

Explanation:

Displacement is a vector connecting the initial position with the final position of motion of an object.

In this case, we have the following motion:

10 m north

30 m north

40 m south

If we take north as positive direction and south as negative direction, we can identify each motion using the following displacement vectors:

So, the total displacement is:

Which means that the final position of the motion corresponds to the initial position.

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is