Well investing the half life of a radioactive isotope the following data was gathered. Graph the data; this graph should resemble the graph from your lab. noticed that you have a Y-value at x=0. this is called a decay curve. answer the following questions: approximately how much mass remains after 8.0 hours?

approximately how much mass remains after 21.0 hours?

what is the half-life for this isotope?

What are chlorofluorocarbons and what impact do they have on the atmosphere?

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r

What part of the ear is names after tools, such as the hammer and the anvil?