The fastest in speed of sound is steel. The slowest in speed of sound is oxygen. Hope this helped! I don't really know how to answer this but by looking at the table it looks like this can be one of the conclusions.

it was too much water inside the clouds and the tornado happened

**Answer:**

The frictional force needed to overcome the cart is 4.83N

**Explanation:**

The frictional force can be obtained using the following formula:

where is the coefficient of friction = 0.02

R = Normal reaction of the load = = =

Now that we have the necessary parameters that we can place into the equation, we can now go ahead and make our substitutions, to get the value of F.

F = 4.83 N

Hence, the frictional force needed to overcome the cart is 4.83N

**Answer:**

**a)** The electric field at that point is newtons per coulomb.

**b)** The electric force is newtons.

**Explanation:**

**a)** Let suppose that electric field is uniform, then the following electric field can be applied:

**(1)**

Where:

- Electric field, measured in newtons per coulomb.

- Electric force, measured in newtons.

- Electric charge, measured in coulombs.

If we know that and , then the electric field at that point is:

The electric field at that point is newtons per coulomb.

**b)** If we know that and , then the electric force is:

The electric force is newtons.