### Self Test 1B.4B

Posted:

**Sun Oct 13, 2019 4:37 pm**I was reading through the textbook and found one of the example questions under the de Broglie section and i am not sure if the answer I got is correct.

The Question:

Self-test 1B.4B Calculate the wavelength of a rifle bullet of mass 5.0 g traveling at twice the speed of sound (the speed of

sound is 331 m?s21).

For my answer I i used de Broglies equation which is wavelength = plancks constant/momentum

I ended up with 2.0 * 10^-34 m

Did anyone else try to do this problem and if so did you get the same answer?

The Question:

Self-test 1B.4B Calculate the wavelength of a rifle bullet of mass 5.0 g traveling at twice the speed of sound (the speed of

sound is 331 m?s21).

For my answer I i used de Broglies equation which is wavelength = plancks constant/momentum

I ended up with 2.0 * 10^-34 m

Did anyone else try to do this problem and if so did you get the same answer?