The dimension of εo _______ a) [M-1L-3T4I2] b) [M-1L-3T4I4] c) [M-1L-3T2I2] d) [M1L-3T4I2]
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The dimension of εo _______
a) [M-1L-3T4I2]
b) [M-1L-3T4I4]
c) [M-1L-3T2I2]
d) [M1L-3T4I2]
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- Q3) This problem uses the semi-empirical mass formula to investigate the masses of isobars with A=100 and their decays. ) Using the semi-empirical mass formula (SEMF) for atomic masses, predict the isobar of A=100 with the lowest mass. 100- II) The mass of Tc is 99.90765 u compared to 99.9042197 u for 9Ru. Which terms in the SEMF change between the two nuclei? Calculate the change in each contribution. Compare the overall difference in mass for the two nuclei predicted by the SEMF with the experimental value for the difference in mass. 100 424 III) List the possible decay modes for Tc and the energy released in each decay. Note, 22Mo has a mass of 99.907477 u. C M Is it possible for 299Mo to decay and if so, how?4. From van der Waals equation, using (2²) ₁ = =0= (OVD), T a = ² - RT₁Vmc Show that and Tc b 8a 27Rb Vmc 3 5. Show that the Lennard-Jones energy -(1) a Pc = 27b²² ----(ii) has a minimum value equal to - e at r = 2¹/6σ. Vmc = 3b 12 U₁, (r) = 4€ [(-) ¹² - ()]Solve ASAP! Questions: Find N = ? for both choices.
- 4. I have two isotopes A and A' of an element with half-lives T1/2 and Ti/2 respectively. (a) Show that with time, the amount of A' relative to A is NA: (t) f (t) = NA (t) = f (0) exp (2) T' (b) The half-lives of 238U and 235U are 4.5 billion years and 700 million years, respectively. Natural uranium is currently about 97.3% 238U and 0.7% 235U . Based on the formula in (a), how long ago would you have been able to build an atomic bomb out of natural uranium ore, given that "weapons grade" uranium is at least 80% 235U? [MY]Part 2: Rubidium-Strontium dating A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This is possible because 87Rb, which has a half-life of 4.75x1010 y, undergoes ß decay and becomes 87 Sr. The geologist determines that the ratio of 87 Sr to 87Rb is 0.136. Assuming there was no 87 Sr in the rock when it was formed, determine the age of the rock. age of rock =13) Calculate the mass-defect of Oxygen-16. (Oxygen has an atomic number of 8 and Atomic Weight of 15.9949u) Group of answer choices A)0.1370u B)0.4935u C)0.9792u D)0.2971u E)0.1812u
- Please help me with the following question and pls make sure its correct 100% its important, thanks Question: Answer the following question and be sure to review Example 30.4 before attempting these problems. Part A. A 11,460-year-old archeological specimen has a 14C activity of 6.5×10−2 Bq. What is the carbon mass of the specimen? Express your answer with the appropriate units. ( possible in grams) Part B . A 7.0×10−2 kg tumor is treated with a high-energy proton beam. If the equivalent dose delivered to the tumor is 1900 rem, how much energy did the tumor absorb? Express your answer with the appropriate units. ( in J)What is the half-life of Ra-226?Prehistoric cave paintings were discovered in a cave in France. The paint contained 13% of the original carbon-14. The half-life of carbon-14 is 5730 years. Estimate the age of the paintings. The paintings are about years old. (Round to the nearest integer.) ts ontents uccess Success edia Library ase Options se Tools Enter your answer in the answer box and then click Check Answer. All parts showing Clear All Check Answer W T el45 MacBook Air DII DD 80 888 F11 F10 F8 F9 F6 F7 F5 F3 F4 |三