Homework Statement
P15. The police car with its 300 Hz siren is moving toward a warehouse at 30 m/s, intending to crash through the door. What frequency does the driver of the police car hear reflected from the warehouse? (5 marks)
Homework Equations
doppler shift for an approaching...
Homework Statement
Your school science club has devised a special event for homecoming. You've attached a rocket to the rear of a small car that has been decorated in the blue-and-gold school colors. The rocket provides a constant acceleration for 9s. As the rocket shuts off, a parachute opens...
Homework Statement
"The mass of a star is 4.85x10^29kg. In scientific notation, Kepler's constant for that star is bx10^w s2/m3. the value of b is_____."
Homework Equations
K=T2/r3
The Attempt at a Solution
This problem is very tough. I first assumed that K would be 0 because the...