Recent content by Solidearth

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    Doppler shift of an approaching source with interference problem

    hey guys thanks for the reply I tried it and it worked. cheers
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    Doppler shift of an approaching source with interference problem

    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...
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    Determining the speed of a rocket car

    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...
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    Given the mass of a star, determine Kepler's constant.

    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...