Answer: The porpoise would hear its echo first because sound travels faster in the water than in air. 
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K has the lowest and Br has the higher
        
             
        
        
        
The answer is 
option D "CO." Co also known as 
Cobalt is the 27th element on the periotic table. It was discovered in <span>1735, it's boiling point is 3200 k.</span>
Atomic mass: 58.9332
Protons: 27
Neutrons: 32
Electrons: 27
Hope this helps!
 
        
        
        
Answer:
A charged particle experiences a force when moving through a magnetic field. ... If the field is in a vacuum, the magnetic field is the dominant factor determining the motion. Since the magnetic force is perpendicular to the direction of travel, a charged particle follows a curved path in a magnetic field. i hope this helped you! have a great day 
Explanation: