Physics - Collision in one dimension

posted by .

The mass of a uranium-238 atom is 3.95*10^-25kg. A stationary uranium atom emits an alpha particle with a mass of 6.64*10^-27kg. If the alpha particle has a velocity of 1.42*10^4m/s, what is the recoil velocity of the uranium atom.

Ans: i tried MaV'a = -MbV'b
i happen to get 2.38*10^2m/s.....
is this the correct answer because the book said it is 2.48...

  • Physics - Collision in one dimension -

    momentum is zero before and after
    0 = mass U * speed U + mass alpha * speed alpha

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A single uranium atom has a mass of 3.97 x 10^-25 kg. It decays into the nucleus of a thorium atom by emitting an alpha particle at a speed of 2.10 x 10^7 m/s. The mass of an alpha particle is 6.68 x 10^-27 kg. What is the recoil speed …
  2. physics

    An alpha particle, the nucleus of a helium atom, is at rest at the origin of a Cartesian coordinate system. A proton is moving with a velocity of v towards the alpha particle from the positive x axis direction. If the proton is initially …
  3. p

    A uranium nucleus (mass 238 u), initially at rest, undergoes radioactive decay. After an alpha particle (mass 4.0 u) is emitted, the remaining nucleus is thorium (mass 234 u). If the alpha particle is moving at 0.052 the speed of light, …
  4. Physics

    An alpha particle(the nucleus of a helium atom) has a mass of 6.64*10^-27kg and a charge of +2e. What are the magnitude and direction of the electric field that will balance the gravitational force on it?
  5. Physics

    An alpha particle(the nucleus of a helium atom) has a mass of 6.64*10^-27kg and a charge of +2e. What are the magnitude and direction of the electric field that will balance the gravitational force on it?
  6. physics

    An atomic nucleus of radon initially moving at 515 m/s emits an alpha particle in the direction of its velocity, and the new nucleus slows to 417 m/s. If the alpha particle has a mass of 4u, and the original nucleus of radon had a …
  7. Physics

    1. A gold atom has a mass of 3.287 • 10-25 kg and is at rest. It emits an alpha particle that has a mass of 6.646 • 10-27 kg. In this process, the gold atom is transformed into an iridium isotope. The alpha particle has a speed …
  8. Physics

    An atomic nucleus of radon initially moving at 530 m/s emits an alpha particle in the direction of its velocity, and the new nucleus slows to 410 m/s. If the alpha particle has a mass of 4u, and the original nucleus of radon had a …
  9. physics

    A uranium nucleus (mass 238 u), initially at rest, undergoes radioactive decay. After an alpha particle (mass 4.0 u) is emitted, the remaining nucleus is thorium (mass 234 u). If the alpha particle is moving at 0.055 the speed of light, …
  10. Physics

    A uranium nucleus (mass 238 u, charge 92e) decays, emitting an alpha particle (mass 4 u, charge 2e) and leaving a thorium nucleus (mass 234 u, charge 90e). At the instant the alpha particle leaves the nucleus, the centers of the two …

More Similar Questions