Several different radioactive decay reactions

Reference no: EM133610634

Question 1.

Planetary scientists can use several different radioactive decay reactions to estimate the age of a sample. Suppose we collect a meteorite, and find that half of its uranium-238 has decayed to its daughter isotope of lead (half-life 4.5 billion years). What fraction of the rock's potassium-40 would you expect to have decayed to its daughter argon-40 (half-life 1.25 billion years)?

Question 2.

Mars's distance from the Sun varies from 1.38 AU at perhelion to 1.66 AU at aphelion, due to its elliptical orbit. Calculate Mars's "no greenhouse" temperature at perihelion and at aphelion. You may assume Mars has a reflectivity of 0.15. By what factor does Mars's average temperature vary during a Martian year (e.g. what is Tperihelion / Taphelion )?

Reference no: EM133610634

Questions Cloud

Some moons are bigger than some planets : You may be surprised that some moons are bigger than some planets. But it's true. Which moon is largest in the Solar system, and is bigger than planet Mercury

Physical features affect amount of radiation leaving earth : What physical features affect the amount of radiation leaving Earth? Which features prevent the loss of heat from Earth to outer space?

Wavelength or red light to wavelength of blue light : Based on that image, what is the ratio of the wavelength or red light to the wavelength of blue light?

Entire volume of the solar system : The distribution of mass in the solar System is?entirely uniform throughout,random throught the entire volume of the solar system

Several different radioactive decay reactions : Planetary scientists can use several different radioactive decay reactions to estimate the age of a sample.

Absorbs infrared radiation is added to planets atmospher : What will happen to each of the following if a gas that absorbs infrared radiation is added to a planet's atmosphere?

How the velocity of the stars in the galaxy changes : Briefly describe how the velocity of the stars in the galaxy changes in relation to its distance from the galactic core.

Hall distance zones ranging from intimate distance to public : Examine Hall's distance zones ranging from intimate distance to the public distance.

Hollister which has visible fault damage is world-famous for : What is the name of this fault that California (and Hollister which has visible fault damage) is world-famous for?

User Account

All Pages