The total circuit current at the resonant frequency is 0.61 amps
What is a LC Circuit?
- A capacitor and an inductor, denoted by the letters "C" and "L," respectively, make up an LC circuit, also referred to as a tank circuit, a tuned circuit, or a resonant circuit. 
- These circuits are used to create signals at particular frequencies or to receive signals from more complicated signals at particular frequencies.
Q =15 = (wL)/R
wL = 30 ohms = Xl
R = 2 ohms
Zs = R + jXl = 2 +j30 ohms where Zs is the series LR impedance
| Zs | = 30.07 <86.2° ohms
Xc = 1/(wC) = 30 ohms
The impedance of the LC circuit is found from:
Zp = (Zs)(-jXc)/( Zs -jXc)
Zp = (2+j30)(-j30)/(2 + j30-j30) = (900 -j60)2 = 450 -j30 = 451 < -3.81°
I capacitor = 277/-j30 = j9.23 amps
I Zs = 277/(2 +j30) = (554 - j8,310)/904 = 0.61 - j9.19 amps
I net = I cap + I Zs = 0.61 + j0.04 amps = 0.61 < 3.75° amps
Hence, the total circuit current at the resonant frequency is 0.61 amps
To learn more about LC Circuit from the given link
brainly.com/question/29383434
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Answer:
        F = 8.6 10⁻¹² N
Explanation:
For this exercise we use the law of conservation of energy
Initial. Field energy with the electron at rest
          Em₀ = U = q ΔV
Final. Electron with velocity, just out of the electric field
          Emf = K = ½ m v²
           Em₀ = Emf
           e ΔV = ½ m v²
           v =√ 2 e ΔV / m
           v = √(2 1.6 10⁻¹⁹ 51400 / 9.1 10⁻³¹)
            v = √(1.8075 10¹⁶)
            v = 1,344 10⁸ m / s
Now we can use the equation of the magnetic force
          F = q v x B
 Since the speed and the magnetic field are perpendicular the force that
         F = e v B
         F = 1.6 10⁻¹⁹  1.344 10⁸ 0.4
        For this exercise we use the law of conservation of energy
Initial. Field energy with the electron at rest
          Emo = U = q DV
Final. Electron with velocity, just out of the electric field
          Emf = K = ½ m v2
           Emo = Emf
           .e DV = ½ m v2
           .v = RA 2 e DV / m
           .v = RA (2 1.6 10-19 51400 / 9.1 10-31)
            .v = RA (1.8075 10 16)
            .v = 1,344 108 m / s
Now we can use the equation of the magnetic force
          F = q v x B
 Since the speed and the magnetic field are perpendicular the force that
         F = e v B
        F = 1.6 10-19 1,344 108 0.4
        F = 8.6 10-12 N
 
        
             
        
        
        
Answer: The conductivity of water depends on the concentration of dissolved ions in solution. ... This is because the Sodium Chloride salt dissociates into ions. Hence sea water is about a million times more conductive than fresh water.
 
        
             
        
        
        
Given required solution
M=10kg W=? W=Fd
v=5.0m/s F=mg 
t=2.40s =10*10=100N
 S=VT
 =5m/s*2.4s
 =12m
 so W=12*100
 W=1200J