Homework Help: Similar to calculating distance of photon traveling in space?

1. Apr 4, 2009

1. The problem statement, all variables and given/known data

Bullets of mass 1.53 gm are fired in parallel paths at speeds of 244.4 m/s through a hole 1.99 mm. How far from the hole must you be to detect a 1.77 cm in the beam of bullets

2. Relevant equations

3. The attempt at a solution

I feel as though some crucial information is missing (like a word between "1.77 cm" and "in the beam". Am I missing something here? Can someone just give me a clue on where exactly to start? My professor is not the best at explaining the concept behind the problem sets. Thanks in advance.

2. Apr 5, 2009

OP here.

So I have tried using Hubble's law, but is this the right approach? Should I be thinking about matter waves?

3. Apr 5, 2009

Astronuc

Staff Emeritus
I imagine that 1.77 cm is the distance between bullets. Is this about resolving some spatial feature at a distance?

Presumably the 1.99 mm is the depth of the hole?

Are you doing something about the uncertainty principle by any chance?

4. Apr 5, 2009