Answer:
75.5g
Explanation:
From the ionic equation, we can write 

next we find the number of charge 
Note Q=it
for i=8.5A, t=3.75 to secs 3.75*60*60=13500secs
hence 

Since one faraday represent one mole of electron which equal 96500C
Hence the number of mole produced by 114750C is 
114750/96500=1.2mol
The mass of copper produced is 

Hence the amount of copper produced is 75.5g
 
        
                    
             
        
        
        
Answer:
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For t1:
t1 = square root of 2h1 / g = square root of 2 * 0.5 / 9.8 = 0.319 sec
For t2:
t2 = sqaure root of 2h2 / g = square root of 2 * 1.0 / 9.8 = 0.451 sec
Wherein:
t = time(s) for the vertical movement
h= height
g = gravity (using the standard 9.8 m/sec measurement)
d1 = 1*0.319 = 0.319 m
d2 = 0.5 * 0.451 = 0.225 m
Where:
d = hor. distance
ratio = d1:d2
= 0.319 : 0.225
=3.19 : 2.25
The answer is 3.19 : 2.25
        
                    
             
        
        
        
Answer:
H = 34.43 m
Explanation:
Given that,
Initial speed of the object, u = 30 m/s
The angle of projection, 
We need to find the maximum height reached by the object. Let it is H. Using the formula for maximum height reached by the projectile.

So, the maximum height reached by the object is 34.43 m.