Question: Could i please get some help with this, thank you !! For question 2 (see website name): List of radioactive nuclides by half-life - Wikipedia

Could i please get some help with this, thank you !!

For question 2 (see website name): List of radioactive nuclides by half-life - Wikipedia

Question 2 A radioactive sample at a lab contains a mixture of 223Ra and 4YCa. There are initially twice as many calcium atoms as there are radium atoms. What is the ratio of calcium atoms to radium atoms 4.50 weeks later? (Note that there are no units in this answer.) Use the following table for halflites. : 5. (Knight Problem 32.19) What are VR and Vo if the emf fre- quency in FIGURE EX32.19 is 10 kHz? [Answer: VR = 6.0 V, Vc = 8.0 V. ]

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