Answer:
If resistance increases current decreases.
Explanation:
- Current is <em>inversely proportional</em> to the resistance.
- from the relation given below, we can clearly see the relation between current and resistance;
                               V=IR
                                I ∝ 1/R
This relation shows that when resistance increases,current decreases.
 
        
             
        
        
        
I would assume that the magnesium would have to come into contact with an ion in order to become a magnesium ion. 
        
             
        
        
        
Answer:
The generator produces electrical energy at a rate of 1378125000 J per second.
Explanation:
volume of water falling each second is 1250 
height through which it falls, h is 150 m
mass of 1  of water is 1000 kg
 of water is 1000 kg
⇒mass of 1250  of water, m = 1250×1000 = 1250000 kg
 of water, m = 1250×1000 = 1250000 kg
acceleration due to gravity, g = 9.8 
in falling through 150 m in each second, by Work-Energy Theorem:
Kinetic Energy(KE) gained by it = Potential Energy(PE) lost by it
⇒KE = mgh
         = 1250000×9.8×150 J
         = 1837500000 J
Electrical Energy =  (KE)
(KE)
                             =  ×1837500000
×1837500000
                             = <u>1378125000 J per second</u>
 
        
             
        
        
        
Answer:
0.976 c
Explanation:
 = velocity of object 1 relative to earth = 0.80 c
 = velocity of object 1 relative to earth = 0.80 c 
 = velocity of object 2 relative to object 1 = 0.80 c
 = velocity of object 2 relative to object 1 = 0.80 c 
 = velocity of object 2 relative to earth
 = velocity of object 2 relative to earth
Velocity of object 2 relative to earth is given as 


 = 0.976 c
 = 0.976 c