Thursday

November 27, 2014

November 27, 2014

Posted by **Please Help!** on Sunday, November 21, 2010 at 11:46pm.

(a) Find the final speed of the alpha particle.

m/s

(b) Find the initial speed of the alpha particle.

m/s

- physics -
**drwls**, Monday, November 22, 2010 at 12:26amThe final momentum components of the two particles perpendicular to the initial direction must cancel. Therefore

1.32*10^5*sin51.9 = Va'*sin60.9

Solve for Va', the final speed of the alpha particle.

Get the initial speed of the alpha particle, Va, by applying conservation of momentum to the intial direction of motion.

Va*4 = 16*1.32*10^5*cos51.0 + 4*Va'*cos60.9

You know Va' from part a. Solve for Va

- physics -
**Please Help!**, Monday, November 22, 2010 at 2:52amI tried this and got

118882 for Va'

and 390097 for Va

but it was wrong?

**Answer this Question**

**Related Questions**

physics - An alpha-particle collides with an oxygen nucleus which is initially ...

physics - An alpha particle collides with an oxygen nucleus, initially at rest. ...

physics - An alpha-particle collides with an oxygen nucleus which is initially ...

Physics - An atomic nucleus of radon initially moving at 530 m/s emits an alpha ...

physics - An atomic nucleus of radon initially moving at 515 m/s emits an alpha ...

Physics - an alpha particle of mass m= 6.6 x 10^-27 kg has a speed of .81c, ...

physic - an alpha particle of mass m= 6.6 x 10^-27 kg has a speed of .81c, ...

physics - An alpha particle, the nucleus of a helium atom, is at rest at the ...

Physics - In 1910 Rutherford performed a classic experiment in which he ...

PHYSICS - An alpha particle (which has two protons) is sent directly toward a ...