Suppose you discovered a meteorite that contains small amounts of potassium- 40, which has a half-life of 1.3 billion years, and its decay product argon-40. Ignore the other decay product, calcium-40, for the purpose of this exercise. You determine that 1/16 of the original potassium-40 remains; the other 15/16 has decayed into argon-40.

How old is the meteorite?

Based on your answer, where is this meteorite probably from?

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas