A waitress fills your water glass with ice water (containing many ...

[segrsyd]

A waitress fills your water glass with ice water (containing many ice cubes) such that the liquid water is perfectly level with the rim of the glass. As the ice melts,
 
  A) the liquid-water level remains flush with the rim of the glass.
  B) the liquid water level rises, causing water to run down the outside of the glass.
  C) the liquid-water level decreases.

Question 2

A radioactive substance with a half-life of 3.0 days has an initial activity of 2400 Bq. What is its activity after 6.0 days?
 
  A) 1200 Bq
  B) 1800 Bq
  C) 600 Bq
  D) 300 Bq
  E) 150 Bq

[alexisweber49]

Answer to Question 1

A

Answer to Question 2

C

[segrsyd]

Thank you!

[alexisweber49]

Always glad to help...