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tino4ka555 [31]
3 years ago
15

Find the voltage

Physics
1 answer:
son4ous [18]3 years ago
5 0

Answer:

Explanation:

solve the parallel resistances

30||40     and 50||30

17.14285714   and 18.75

total Resistance = 35.89285714

V = IR

9V = I *35.89285714

9V / 35.89285714 = I

0.250746 = I

Now use the resistance across AB

V = 17.14285714 * 0.250746

V = 4.29850

this is the Voltage drop across AB  :P

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A 320-kg satellite experiences a gravitational force of 800 N. What is the radius of the satellite’s orbit? What is its altitude
Westkost [7]

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Altitude of Satellite =33541.9×  m

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Formula for gravitational force for a satellite of mass m  moving in an orbit of radius r around a planet of mass M is given by;

F= G\frac{m M}{r^{2} }

Where G = Gravitational constant = 6.67408 × 10-11 \frac{m^{3} }{Kg sec^{2} }

We are given

F= 800 N

m = 320 Kg

M = 5.972 × 10^{24} Kg

G = 6.67408 × 10-11 \frac{m^{3} }{Kg sec^{2} }

We have to find radius r =?

putting values in formula;

==> 800 =6.67408 ×10^{-11}× 320 × 5.972 × 10^{24} / r^{2}

==> 800= 39.8576 × 10^{13} × 320 / r^{2}

==> 800 = 12754.43 × 10^{13} / r^{2}

==> r^{2} = 12754.43 × 10^{13} /800

==> r^{2}=15.94 × 10^{13}

==> r =  3.992 × 10^{7} m

==> r = 39920×10^{3} m

This is the distance of satellite from center of earth. To find altitude we need distance from surface of earth. So we will subtract radius of earth from this number to find altitude.

Radius of earth =6378.1 km = 6378.1 × 10^{3} m

Altitude = 39920×10^{3} - 6378.1 ×

3 0
3 years ago
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