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san4es73 [151]
3 years ago
13

Does anyone know how to work this out?

Physics
1 answer:
Vladimir [108]3 years ago
8 0

Answer:

\frac{17}{14}*5 = Approximately 6

Explanation:

<u>What we need to know:</u>

1. Given that this is a parallel circuit, each pathway will receive the full voltage from the source. Therefore, each pathway will receive 17V.

2. The current (I) stays the same for all loads in series. Therefore, I2 and I3 are equal since they are connected in series.

3. Ohm's law states that Voltage = Current × Resistance (V=IR)(I=V/R)(R=V/I)

<u>1) Calculate the current for the path containing R2 and R3</u>

I_2_,_3=\frac{V_2_,_3}{R_2_,_3}\\I_2_,_3=\frac{17}{5+9}\\I_2_,_3=\frac{17}{14}

Because the current running through this path is \frac{17}{14} A, then I2 is \frac{17}{14} A.

<u>2) Use Ohm's Law by plugging in I2 and R2</u>

V_2=I_2*R_2\\V_2=\frac{17}{14} *5

V_2=6 (approximate)

Therefore, V2 is approximately 6V.

I hope this helps!

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k is the spring constant
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The total energy is conserved, so we can calculate its value at any point of the motion. If we take the point of maximum displacement:
x=A=4.00 cm = 0.04 m
then the velocity of the system is zero, so the total energy is just potential energy, and it is equal to
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the potential energy of the system is
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and so the kinetic energy is
K=E-U=0.028 J - 1.75 \cdot 10^{-3}J =0.026 J
since the mass is m=50.0 g=0.05 kg, and the kinetic energy is given by
K= \frac{1}{2}mv^2
we can re-arrange the formula to find the speed of the object:
v= \sqrt{ \frac{2K}{m} }= \sqrt{ \frac{2 \cdot 0.026 J}{0.05 kg} }=1.02 m/s

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U= \frac{1}{2}kx^2 = \frac{1}{2}(35.0 N/m)(0.03 m)^2 =0.016 J
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From the question,

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