3. A tennis ball is hit back and forth between two players. If it takes 2.3 s for
the ball to go from one player to the other, what are the period and
frequency of the ball's motion?

Time period of ball's motion is 4.6 s

Frequency of ball's motion is 0.22 Hz

Explanation:

In this problem, Time period is define as the time taken by the ball to come back to its original position.

Let A be the player who first hits the ball towards the player B. We know that ball takes 2.3 s to travel from player A to player B. It takes same time to come back to player A from player B. Thus,

Time period of ball's motion = 2 x 2.3 s = 4.6 s

Frequency is defined as the occurrence of any event per unit time. In this case, the frequency of the ball's motion is given by :

Frequency =

Frequency = = 0.22 Hz    

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

d) physical means can be used to separate the components of air.