Two technicians are discussing oil leaks. technician a says that an oil leak can be found using a fluorescent dye in the oil with a black light to check for leaks. technician b says a white spray powder can be used to locate oil leaks. which technician is correct? a. technician a only
b. technician b only
c. both technicians a and b
d. neither technician a nor b

What is the final velocity of the initial velocity of 25 and -50?

What is an aquifer for science class

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?