# B Probability density in physics

1. Nov 21, 2018

### volnei_cipriano

Studying probabilistic density, I know that a function that is integrated between two limits presents a probability. But how should I think to solve a problem where I need to determine the probability of a particle being seen being that its moment liner is a constant value

2. Nov 21, 2018

### PeroK

There may be something lost in translation there. Do you mean the probability that you have specific value?

3. Nov 21, 2018

### volnei_cipriano

The linear momentum of the particle has a value equal to five. I'm trying to understand how I can explain the probability of a particle view by having a constant liner moment. In my previous studies of probabilistic density, I had a range of values, but I could not analyze when the value is constant.

4. Nov 21, 2018

### PeroK

I'm sorry to say I don't understand your question.

5. Nov 21, 2018

### RPinPA

It sounds like you are trying to apply the Heisenberg Uncertainty Principle and you've been told that $p = 5$ (in some units) with $\Delta p = 0$. Is that your problem?

Were you really told that $\Delta p = 0$ or is this an assumption you are making? You really have told us nothing about the calculation you are trying to do.

Can you try to provide a more complete question?