5. (0/1 Points) DETAILS PREVIOUS ANSWERS SALGTRIG4 4.6.019. This exercise uses the radioactive decay model. The...
9. [-14 Points] DETAILS SPRECALC7 4.6.017. This exercise uses the radioactive decay model. The half-life of radium-226 is 1600 years. Suppose we have a 28-mg sample. (a) Find a function m(t) = moz-th that models the mass remaining after t years. m(t) = (b) Find a function m(t) = moet that models the mass remaining after t years. (Round your value to six decimal places.) m(L) = (c) How much of the sample will remain after 2500 years? (Round your...
SAlgTrig4 4.6.021.MI 5. -/1 points This exercise uses the radioactive decay model. If 250 mg of a radioactive element decays to 240 mg in 60 hours, find the half-life of the element. (Round your answer to the nearest whole number.) hr Need Help? Read It Watch It Master I Talk to a Tutor
MY NOTES PRAE ASK YOUR TEACHER 6. 0/1 Points DETAILS SALGTRIG4 4.6.020.ML. PREVIOUS ANSWERS This ens the radioactive de model 221defe How long little for down your the whole X Need Help?
7. (0/3 points) DETAILS PREVIOUS ANSWERS SALGTRIG4 4.6.025.MI. This exercise uses Newton's Law of Cooling. A hot bowl of soup is served at a dinner party. It starts to cool according to Newton's Law of Cooling so that its temperature at timet is given by TE) = 59 + 1430-0.05 where t is measured in minutes and is measured in (a) What is the initial temperature of the soup? (b) What is the temperature after 10 min? (Round your answer...
Tvor om your 4. SPreCalc7 4.6.017. My Notes A This exercise uses the radioactive decay model. The half-life of radium-226 is 1600 years. Suppose we have a 26-mg sample. (a) Find a function m(t)- mo2th that models the mass remaining after t years m(t) - 26.2 (b) Find a function m(t) = moet that models the mass remaining after years. (Round your r value to six decimal places.) m(t) - 26.e-0.0004336 (c) How much of the sample will remain after...
Strontium-90 has a half-life of 28 days. Using the exponential decay model Q(t) = Qoe-ht, find the k value to 4 decimal places. How long it would take for 150 grams of Strontium-90 to decay to 5 grams. Round your answer to the nearest day. Answer with a complete sentence. Show all work.
One radioactive material that is produced in atomic bombs is the isotope strontium-90, which has a half-life of 28 years. If a person is exposed to strontium-90, it can collect in human bone tissue, where it can cause leukemia and other cancers. If an atomic bomb test site is contaminated by strontium-90, how long will it take for the radioactive material to decay to 30% of the original amount? (Round the growth factor to eight decimal numbers. Round your answer...
Radioactive Decay - Half-life and Activity 1 Radioactive decay - Half-life Time 0 1000 21 31 750 N 1.000.000 500,000 250,000 125,000 62,500 31.250 15.625 7813 3.506 1.953 977 51 6 500 7 BI . 101 250 125 0 tie 21.234.41516171819, 1012 Time in multiples of A radioactive sample's half-life is 30.2 years. 1 year = 365 days, 1 day = 24 hours, 1 hour - 60 minutes, 1 minute = 60 seconds (a) Find its decay constant in year...
An isotope of cesium (Cesium-137) has a half-life of 30 years. If 1.0 mg of cesium-137 disintegrates over a period of 90 years, how many mg of cesium-137 would remain? 14. Thallium-208 has a half-life of 3.053 min. How long will it take for 120.0g to decay to 7.500 15. Element-106 has a half-life of 0.90 seconds. If one million atoms of it were prepared, how many atoms would remain after 4.5 seconds? 16. A 2.5 gram sample of an...
Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patient's body to treat cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while lowering the risk of damage to healthy tissue. Iridium-192 is often used in the head or breast. Use the radioactive decay curve of iridium-192 to answer the three questions. 100 . 90 - 80 20 Sample remaining (5) SO 30 10 0...