8. After three half-lives of a substance, what percent of the…
Question Answered step-by-step 8. After three half-lives of a substance, what percent of the… 8. After three half-lives of a substance, what percent of the original sample is left? Show your work.0%50 %25%12.5%7. How long would an instrument which is open at one end have to be in order to hear the 5th harmonic at 4000 Hz on an open tube? Assume the speed of sound is 340 m/s. Show your work.0.21 m0.11 m0.44 m0.51 m6. A box of mass 10 kg is connected to a spring and oscillates with an amplitude of 0.1 meters. What is the spring constant? Show your work.10 N/m98 N/m980 N/m100 N/m4. The half-life of uranium-238 is 1.41 x 1017 seconds. A sample contains 5.41 x 1016 nuclei. What is the decay constant for this decay? Show your work.3.45 x 10-18 s-15.61 x 10-18 s-14.91 x 10-18 s-17.66 x 10-18 s-1 Science Physics SCIENCE 141 Share QuestionEmailCopy link Comments (0)
