Answer:
The wavelength = 0.3333 meters at 900 MHz, therefore, = /4 = 0.08333 meters.
 
        
             
        
        
        
Answer:
E.  All of the Above
Explanation:
By doing any kind of exercise or physical activity, you are increasing your overall health.  Your muscle strengthen because of the jumping and movement of arms.  You are more alert because you have to time each jump right in order to keep going.  By breathing evenly while jumping, you do help your Cardiorespiratory fitness as well.  And of course, you increase your athletic ablility over all with much endurance and practice.
 
        
             
        
        
        
The statement that is true of cooling down after physical activity is that you should cool down for about 5 to 10 minutes after being physically active.