Raymond davis jr.’s neutrino detector contained approximately 1030 chlorine atoms. during his experiment, he found that one neutrino reacted with a chlorine atom to produce one argon atom each day.
how many days would he have to run the experiment for 1% of his tank to be filled with argon atoms?
convert your answer from a. into years.
compare this answer to the age of the universe, which is approximately 14 billion years (1.4 × 1010 y).
what does this tell you about how frequently neutrinos interact with matter?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r