Calculate : L c * a*exp(-2a²)dx c= 15.8 Answer:
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- A banana contains the naturally occurring radioactive isotope potassium K-40 which undergoes Beta minus decay. Write the Beta decay formula to include the daughter isotope and the ejected particles.The table gives the data the scientist obtained when she tested 1 kg of cooked A scientist has compared the vitamin content of food exposed to gamma radiation (c) with food that has not been exposed. chicken. Food not exposed to gamma radiation Food exposed to gamma radiation Vitamin Mass in milligrams Mass in milligrams B6 1.22 1.35 B12 21.00 28.00 E 3.30 2.15 Niacin 58.00 55.50 Riboflavin 2.10 2.25 Considering only this data, which one of the following is a correct conclusion? Put a tick (v) in the box next to your answer. Vitamin content is not affected by gamma radiation. Gamma radiation completely destroys some types of vitamin. Exposure increased the content of some types of vitamin. (1) (Total 6 marks)What isotope is produced when U-239 emits a beta particle?
- What mass of fluorine -18. (F-18) is an activity of 10mCi? How long will it take for the activity to decrease to 0.15mCi?Which type of radiation—alpha, beta, or gamma—predominates within an enclosed elevator descending into a uranium mine?After production, a 300µl solution with a specific activity of 50 GBq/ml was torn. Delivery timeis 1 day. The half-life of the isotope is 4 days. Find the amount of solution that needs to besent so that the customer has 3.0 GBq at the date of delivery.