Answer:
Show attached picture
Explanation:
Let's call V the voltage provided by the battery in the circuit. M is the multimeter (let's call 
 its internal resistance) and R indicates the resistance of the light bulb.
We know that the meter's internal resistance is 1000 times higher than the bulb's resistance:
 (1)
Both  the meter and the bulb are connected in parallel to the battery, so they both have same potential difference at their terminals:

Using Ohm's law, 
, we can rewrite the previous equation as:

where
 is the current in the meter
 is the current in the bulb
Using (1), this equation becomes

so, the current in the meter is 1000 times less than through the bulb.
 
        
             
        
        
        
Answer:
A=0.199
Explanation:
We are given that  
Mass of spring=m=450 g=
Where 1 kg=1000 g
Frequency of oscillation=
Total energy of the oscillation=0.51 J
We have to find the amplitude of oscillations.
Energy of oscillator=
Where 
=Angular frequency
A=Amplitude 

Using the formula 



Hence, the amplitude of oscillation=A=0.199
 
        
             
        
        
        
Answer:
It will take 4 sec rock to comes its original point
Explanation:
It is given that the rock comes to its original point 
So displacement S = 0 m 
Initial velocity u = 19.6 m/sec
Acceleration due to gravity 
According to second equation of motion 


t = 4 sec
 
        
                    
             
        
        
        
Explanation:
When Michelson-Morley apparatus is turned through 
 then position of two mirrors will be changed. The resultant path difference will be as follows.
       
Formula for change in fringe shift is as follows.
           n = 
        
              v = 
According to the given data change in fringe is n = 1. The data is Michelson and Morley experiment is as follows.
              l = 11 m
     
 
            c = 
 m/s
Hence, putting the given values into the above formula as follows.
             v = 
                = 
                = 
Thus, we can conclude that velocity deduced is 
.
 
        
             
        
        
        
-3 m/s 
---------
per min
oh I think 8m/s to 3m/s to 0m/s
idk probably -0.08