**Answer:**

From 1846 to 1940 it would be about 1950

**Explanation:**

If the net force applied to an object is 0, an object does not change its motion or acceleration.

**Answer:**

** 60 J**

**Explanation:**

Potential Energy: This can be defined as the energy possessed by a body, due to its position. The S.I unit of potential energy is Joules. The Formula of potential energy is given as

Ep = mgh or

Ep = Wh ................ Equation 1

Where Ep = Potential energy of the box, W = Weight of the box, h = Height.

Given: W = 20 N, h = 3 m.

Substitute into equation 1

Ep = 20×3

Ep = 60 J.

**Hence the gravitational potential energy of the box = 60 J**

**1) Temperature** (High temperature <span> increase the kinetic energy of a substance, speeding </span><span>diffusion rates)

</span>

**2) Particle size** (<span>Larger particles require more kinetic energy to move, causing lower rates of diffusion)

</span>

**3) Concentration**

Hope this helps!

Well it occurs in igneous, metamorphic, and sedimentary rocks.

quartz is a mineral, not a rock.

it is abundant or in other words rich.