**Answer:**

**Explanation:**

let be the mass attached, let be the spring constant and let be the positive damping constant.

-By Newton's second law:

where is the displacement from equilibrium position. The equation can be transformed into:

shich is the equation of motion.

3.) multiply distance to increase speed

**Answer:**

**The islamic believers travel to mecca once during their lives because they perform Hajj ( Pilgrimage) which is one of the pilar of the islam.**

**Explanation:**

**First of all it is very important to know what is the Islam.**

**The Islam is an Abrahamic monotheistic religion teaching that there is only one god ( Allah) .**

**It is the world's second-largest religion with over 1.8 billion followers or 24 % of the world's population. By the other hand the mecca is the holiest of muslim city.**

**Answer:**

(a)

(b) The force is repulsive

**Explanation:**

a) According to Coulomb's law, the magnitude of the electrice force that one particle exerts on the other is defined as:

Here k is the coulomb constant, and are the signed magnitudes of the charges and d is the distance between them.

b) **According to Coulomb's law, if the two charges have the same sign, the electrostatic force between them is repulsive.**

**Answer:**

f the mass of an object increases, predict what will happen to the coefficient of sliding friction. The coefficient of sliding friction will increase. The coefficient of sliding friction will decrease.

**Explanation:**