Rewrite this formula to solve for GGi: DX=fL/GGi

Physics

1 answer:

sashaice [31]4 years ago

3 0

Comment if you need clarification!

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A neon sign that requires a voltage of 11,000 v is plugged into a 120-v wall outlet. what turns ratio (secondary/primary) must a

Arisa [49]

The equation that relates the voltages and the number of turns in a transformer is
$\frac{V_s}{V_p}= \frac{N_s}{N_p}$
where $V_s = 120 V$ is the voltage in the secondary coil, $V_p=11000 V$ is the voltage in the primary coil, and $N_s$ and $N_p$ are the number of turns on the secondary and primary coils.

Using the numbers, we find the ratio between the number of turns:
$\frac{N_s}{N_p}= \frac{V_s}{V_p}= \frac{120 V}{11000 V}=0.0109$

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3 years ago

Something is thrown in the air and 5.35 seconds later it lands on something 2.1 meters from the ground. How fast was it thrown u

UNO [17]

Answer:

26.6 m/s

Explanation:

Given:

Δy = 2.1 m

t = 5.35 s

a = -9.8 m/s²

Find: v₀

Δy = v₀ t + ½ at²

(2.1 m) = v₀ (5.35 s) + ½ (-9.8 m/s²) (5.35 s)²

v₀ = 26.6 m/s

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3 years ago

What color does the star alpha centauri appear to be?

myrzilka [38]

B.yellow-white is the answer.

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3 years ago

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A satellite is in circular orbit around the earth. The orbit the satellite is at a height of 420 km above the earth's surface. F

astraxan [27]

Answer:

7661.06 m/s

Explanation:

R = Radius of Earth = $6.38\times 10^6\ m$

h = Distance from the Earth = 420000 m

G = Gravitational constant = $6.674\times 10^{-11} N m^2/kg^2$

M = Mass of Earth = $5.98\times 10^{24}\ kg$

$V=\sqrt{g{\frac{R^2}{R + h}}}\\\Rightarrow V=\sqrt{\frac{GM}{R^2}{\frac{R^2}{R + h}}}\\\Rightarrow V=\sqrt{\frac{6.674\times 10^{-11}\times 5.98\times 10^{24}}{(6.38\times 10^6)^2}{\frac{(6.38\times 10^6)^2}{6.38\times 10^6 + 420000}}}\\\Rightarrow V=7661.06\ m/s$