Epsilon eridani is a star that is 10.5 light years away from earth. one light year is about 9.46 trillion kilometers. the distance between the star and earth in kilometers is trillion kilometers.

Abanana can be an excellent source of potassium in our diet. there is a naturally occurring, long-lived, radioactive isotope of potassium, 40-19k, which has a natural abundance of 0.0117% and a half-life 1.27 billion years. estimate the activity of a typical banana due to this potassium isotope assuming that most of the mass is in stable potassium.

This migraine wont go away and i dont feel safe taking any more medicine for the next few hours

The results of the dexa measurements are known as?