Post a New Question

ap physics

posted by .

A spherical comet of mass m and diameter is d, travelling at velocity v enters a cloud of stationary cosmic meteoroids (small rocks). The average density of the cloud is p. When a meteoroid impacts the comet it adheres to its surface. As a result the comet slows down and after traveling t it exits the cloud. How much time in seconds does the comet spend in the cloud? (what is time t?)

  • ap physics -

    change in momentum=added mass*average velocity

    volume swept out by comet=PI*(d/2)^2*averageveloccity*time

    massadded=p*volumeswept out.

    change in momentum=p*PI*(d/2)^2*averagevelocity*time

    change in momentum=mv+(m+massadded)(vf)

    To actually solve this you have to know v, and vf, as I see it.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. PHYSICS!!

    Comet Halley returns every 74 years. Find the average distance of the comet from the sun. How do i do this?
  2. Science-Help

    How is a meteor and astroid similar? Meteors and asteroids are both rocks from space that sometimes hit the earth. They may be made from ice. How are they different?
  3. Physics

    A comet with a mass of 7.95 1011 kg strikes Earth at a speed of 22 km/s. (a) Find the kinetic energy of the comet in joules. ____ J (b) Compare the work that is done by Earth in stopping the comet to the 4.2 1015 J of energy that was …
  4. Science

    The water molecules now in your body were once part of a molecular cloud. Only about onemillionth of the mass of a molecular cloud is in the form of water molecules, and the mass density of such a cloud is roughly 4.0×10−21 …
  5. Physics

    A comet is traveling towards the earth. The comet has a mass of 5.50E+12 kg and a radius of 323 m. The comet is traveling with a speed of 13.5 km/s and spinning with a period of 0.15 seconds when its center is a distance 2.28E+7 m …
  6. Physics

    Suppose there's a collison way out in the Oort cloud, say 30,000 AU away from the Sun. This collison causes one of the comets to alter its orbit and head almost directly at the Sun, such that the comet just skims the surface of the …
  7. physics

    in 2005, the space probe Deep Impact launched a 30 kg projectile into Comet Tempel 1. Observing the collision helped scientists learn about the comet’s characteristics. The come is estimated to have a mass of 9.0 x 1013 kg. a. Assuming …
  8. Physics

    The appromiate mass of a comet X has been memasured. When comet X orbits the Sun 5000 years later it only has half it's previous mass. Approximately how many orbits of the Sun has the comet completed and what is the period of the comets …
  9. Pre-Calculus

    Venus orbits the sun in an approximately circular path. Venus is about 67 million miles from the sun. A comet is located 80 million miles north and 73 million miles west of the sun. The comet follows a straight-line path and exits …
  10. Science

    3. Which of the following small bodies are the hardest to tell apart because they are made of similar materials?

More Similar Questions

Post a New Question