A radioactive isotope has an activity of 8.02×10^4 Bq initially. After 3.55 hours the activity is 4.81×10^4 Bq. a. What is the half-life of the isotope?
b. What is the activity after an additional 3.55 hours?

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

Acar moves at 12m/s and coasts up a hill with a uniform acceleration of -1.6m/s2. how far has it traveled after 6.0s?

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a