Answer:
A) The resonance angular frequency in an L-R-C circuit is

B) The current can be found by calculating the impedance of the system. 

Since  at resonance.
 at resonance. 
So, 
 
        
             
        
        
        
Answer:First the Republicans were dominant from 1860 to around 1882, then not again until 1920 time 1932. The reason for the first part is the Democratic party started a civil war to keep their slaves and the Democratic party lost that war.
Explanation:
This is what i found.
 
        
             
        
        
        
Answer:
shadow length 7.67 cm
Explanation:
given data:
refractive index of water is 1.33
 by snell's law we have


solving for



from shadow- stick traingle


s = 19tan22 = 7.67 cm
s = shadow length
 
        
             
        
        
        
Answer:
Power= 0.5hp = 375W
T = 3hrs = 10800s
Power = Work done/ Time
Work = Power * Time = 375 * 10800 = 4050000J
 
        
             
        
        
        
A proton travels through a constant magnetic field in the negative y-direction while moving in the negative x-direction. The proton will be subject to a magnetic pull that is directed into the page. Option B is correct.
<h3>What is the right-hand thumb rule?</h3>
Hold a current-carrying conductor in your right hand with your thumb pointing in the direction of the current then wrap your fingers around the conductor and orient them in the direction of the magnetic field lines. 
A proton travels through a constant magnetic field in the negative y-direction while moving in the negative x-direction. 
The proton will be subject to a magnetic pull that is directed into the page. 
Hence, option B is correct.
To learn more about the right-hand thumb rule refer to the link;
brainly.com/question/11521829
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