There are no appropriate examples in the list you provided with your question.
Examples of radiation:
... sunshine to tan your skin
... radio energy to bring you the news
... X-ray to check your teeth
... microwave to heat up the meatloaf
... flashlight to see where you're going
... RF energy to get an MRI of your knee
... infrared radiation from the campfire to warm your tootsies
... UHF radio waves to make a call or check Facebook with your smartphone
        
             
        
        
        
Explanation:
since both the teammates are of the same height, their height won't matter. Because now the basketball won't cover any vertical distance. 
We have to calculate its range the horizontal distance covered by it when tossed from one teammate to the other. 
range can be calculated by the formula :- 

u is the velocity during its take off and  is the angle at which its thrown
 is the angle at which its thrown 
Given that 
- u = 8m/ s 
 = 40° = 40°
calculating range using the above formula 


value of sin 80 = 0. 985



Hence, 

 
        
             
        
        
        
Answer:

Explanation:
When a standing wave is formed with six loops means the normal mode of the wave is n=6, the frequency of the normal mode is given by the expression:

Where  is the length of the string and
 is the length of the string and  the velocity of propagation. Use this expression to find the value of
 the velocity of propagation. Use this expression to find the value of  .
.

The velocity of propagation is given by the expression:

Where  is the desirable variable of the problem, the linear mass density, and
 is the desirable variable of the problem, the linear mass density, and  is the tension of the cord. The tension is equal to the weight of the mass hanging from the cord:
 is the tension of the cord. The tension is equal to the weight of the mass hanging from the cord:

With the value of the tension and the velocity you can find the mass density:


 
        
             
        
        
        
Ofcoure the elephante as the elephant has more weight