But cracked cracks nuts while scripts cut

**Answer:**

U=α/(x+x_0)^2

v=1.88m/s

**Explanation:**

We have that

**(a)**

The potential is calculated by using

**(b)**

m=0.5kg

The acceleration can be obtained if we calculate the force for x=4, and after we compute the acceleration

and finally, we can use the equation for the final speed

I hope this is useful for you

regards

**Answer:**

0.68 m

**Explanation:**

Since the volume of water is 310 L, and we know that 1 litre = 1 dm³. So the volume of water is V = 310 dm³. Since this volume of water is the volume of water the cubical steel tank can contain, it equals the volume of the cubical steel tank.

We know that the volume of the cubical steel tank V = L³ where L is the length of side of the cube on the inside.

So the length of side of the cube L = ∛V = ∛310 dm³ = 6.77 dm = 6.77 dm × 1m/10 dm = 0.677 m ≅ 0.68 m

So, the smallest possible inside length of the tank is 0.68 m

**Answer:**

The meaurement of the amount of friction a surface will generate is called the coefficient of friction.

**Answer:**

The total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.