Answer:
Naturally occurring radio waves are made by lightning or by astronomical objects. Artificially generated radio waves are used for fixed and mobile radio communication, broadcasting, radar and other navigation systems, communications satellites, computer networks and innumerable other applications.
Explanation:
 
        
             
        
        
        
There was a supercontinent called Pangea
        
             
        
        
        
Answer:
The pressure exerted by camel feet is <u>2000 N/m²</u>. 
Step-by-step explanation:
<h3><u>Solution</u> :</h3>
Here, we have given that ;
- Force applied on camel feet = 4000 N
- Total area of camel feet = 2 m²
We need to find the pressure exerted by camel feet.
As we know that :

Substituting all the given values in the formula to find the pressure exerted by camel feet.

Hence, the pressure exerted by camel feet is 2000 N/m². 

 
        
             
        
        
        
Answer:
7976 Pascals significant figure= 7.9*10^3
Explanation:
formula of hpg = height*density*gravitational energy 
.80*10*997=7976 pascals