Thermoluminescence [Choose] [Choose] Ages greater than 1,000 years ago. Ages between 1,000 years ago and 600 kya. Ages greater than 100 kya Ages between 300 BP and 300 kya. Ages between 0-50 kya. [Choose] Uranium-Thorium K-Ar (Potassium-Argon) Fission Track [Choose] Radiocarbon (14C) (Choose]
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- Which of these factors influences the radioactive decay measured by radiometric dating? Temperature Half-life Pressure Chemical bonding stateIf the half-life of a radioisotope is 20,000 years, then a sample in which three-quarters of that radioisotope has decayed is _______ years old. a. 15,000 b. 26,667 c. 30,000 d. 40,000prus Cycle D O d-ons Help Last edit was 22 minutes ago Calibri BIUA o回0- E= == E 公 12 21 https://www.youtube.com/watch?v=Wzo UFSZLUA Watch the video and use ONLY the video to answer the following questions. 1. Is phosphorus found in the atmosphere?In the atmosphere phosphorus can mainly be found as very small dust particles. 2. Name 5 things that phosphorus does for our planet and for us: b. C.
- Average Exposure to Radiation from Common Sources Source Dose (mrem/year) Naturally Occurring Radiation Cosmic rays Terrestrial radiation (rocks, buildings) Inside human body (K-40 and Ra-266 in the bones) Radon in the air 27 28 39 200 Total 294 Artificial Radiation Medical Xrays Nuclear medicine Consumer products Nuclear power plants All others 39 14 10 0.5 1.5 Total 65.0 Grand total 359 Use the data on the table to calculate the percentage of total annual radiation from all sources that the average person receives from consumer products. percentA sample of a igneous rock contains small amounts of radioactive potassium and argon. Using the ratio of 40Ar to 40K, it is determined that only 25% of the original parent isotope remained. How old is this rock sample? Please include thought process and a therefore statement. Thank you very much, have a good day!Write an abstract of the article below in Results (around 3-4 sentences): RESULTS AND DISCUSSION For the duplicate sets of reactors in experiments A and B, reactors inoculated with Pond 1 started gas formationsooner and peaked earlier than the Pond 2 and Horse Dung reactors. For both sets of reactors, the reactor seeded with pond bottom soil obtained from Pond 1 had the highest methane generation rate, as well as the largest cumulative volume of methane, followed by Pond 2 and finally the reactor seeded with Horse Dung, as shown in Figure 1(A) and (b) below. The possible reason is that Pond 1 is an older pond compared to Pond 2, and the bottom soil obtained from the Pond 1 may have more stable organic matter accumulated as well as higher nutrient concentrations, leading…
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