Recent content by mike91

So since the satellite is likely much less massive than the planet it is orbiting, the orbital speed can be written as v_o=sqrt(GM/r).. EV = sqrt(2GM/r), so I can rewrite that as sqrt(GM/r) = EV/sqrt(2) and I get v_o = EV/(sqrt(2)). I have v_o = 7080, so solving for EV I get EV = sqrt(2)*v_o...

Homework Statement A satellite is in orbit around a planet with orbital speed determined to be 7080 m/s. Find the escape velocity from the planet from this position of its orbit. Homework Equations EV=sqrt(2GM/r) The Attempt at a Solution With a problem like this, I would just...

That's it, thanks for the help!

So taking 668.7/660 and rounding off to 1.0132, I then get v_s = 4.43 m/s.

Thanks for the welcome, red. Ok, so using the same methods listed above: f_beat=f_2 - f_1 f_2 = 8.7 Hz + 660 Hz => f_2 = 668.7 Hz For the doppler shift equation, the numerator (v+v_L) is just 340 m/s, since the listener is stationary. the denominator (v+v_s) is (340 - v_s), because the positive...

Homework Statement Two police cars have identical sirens that produce a frequency of 660 Hz. A stationary listener is standing between two cars. One car is parked and the other is approaching the listener and both have their sirens on. The listener notices 8.7 beats per second. Find the speed...