At standard Temperature and pressure sound travels at speed u=330m/s relative to the air through which it propagates. Four students A,B,C and D position themselves as shown if figure 1.20 (see attachment), with A,B,C in a straight line and D vertically above B. A steady wind is blowing with speed 30m/s along the line ABC. If
Question: 32P has a half life of 14.26 days. If you start with 200.0 g of it, how many grams will remain after a time of 3(14.26) days?
A threory of nuclear astrophysics is that all the heavy elements like uranium are formed in supernova explosions of massive stars, which immediately release the elements into space. If we assume that at the time of the explosion there were equal amounts of 235U and 238U, how long ago were the elements that formed our Earth rele
A 10.0 g sample of uranium-27 (u-237) undergoes beta decayy. After 27.0 d, 0.625 g of U-237 remains. Calculate the half-life of u-237. Please show me each step in the calculations. Thanks.
Select the three options which are NOT examples of quantities that could be modeled by exponential growth or decay. Options A. The number of students registering for named degress at the Open University, if each year there are 5% more than the previous year. B. The world's reserve of a certain mineral, given that 1000
The half-life of Iodine-126 is 60 days. If the original sample had a mass of 50.0 grams, how much is left after 360 days?
A radio active substance has a half life of 30 days. Calculate (a) the radioactive disintegration constant (b) The average life (c) the time taken for ¾ of the original number of atoms to disintegrate and (d) the time taken for 1/8 of the original number of atoms to remain unchanged
1. An alpha particle is fired at a sheet of gold with a kinetic energy of 4.62E-13 joules. Knowing that each gold nucleus has 79 protons, about how close will the alphas come to the nucleus? 2. If the binding-energy-per-nucleon for an alpha particle is 61.0 MeV, what is the total binding energy of the alpha? Give you answer