An object made from brass was left out in the sun for 17 hours had an initial temperature of 20 Degrees Celsius , later that day it's temperature was recorded to be 45 Degrees . The brass object had an initial length 18m . Calculate the change in objects length . Knowing that M a=19*10^ ^ -19

Acyclotron is used to produce a beam of high-energy deuterons that then collide with a target to produce radioactive isotopes for a medical procedure. deuterons are nuclei of deuterium, an isotope of hydrogen, consisting of one neutron and one proton, with total mass 3.34×10−27kg. the deuterons exit the cyclotron with a kinetic energy of 6.40 mev .a-what is the speed of the deuterons when they exit? b-if the magnetic field inside the cyclotron is 1.25 t, what is the diameter of the deuterons' largest orbit, just before they exit? c-if the beam current is 350 μa how many deuterons strike the target each second?