physics exam 5 Pt. 2
The Heisenberg uncertainty principle states that
ATA
The first to be credited with the idea that light is quantized was
Albert Einstein.
In a smoke detector americium (A = 95) transmutes to neptunium (A = 93) by
alpha emission.
Radium (A = 88) transmutes to radon (A = 86) by
alpha emission.
When Rutherford directed a stream of alpha particles at a gold foil, some particles
bounced back. deflected at a variety of angles. continued through the foil.
A device that shows the bending of particle trails in liquid hydrogen is a
bubble chamber.
Both electrons and protons have equal-magnitude
charge.
Cosmic rays originate in the
cosmos.
The most harmful radiations are those that
damage living cells.
The sources of X-rays are
electron clouds.
Which wavelengths are shortest?
gamma ray.
The radioactive half-life of a material is the time for
half of an original quantity of the material to decay. its decay rate to reduce to half.
Rays with the shortest wavelengths have the
highest frequencies and energies.
The spectral lines of atomic spectra are
images of the slit in a spectroscope. as an identity of atoms as fingerprints are of people. orderly, and even predictable.
All deposits of natural uranium contain appreciable amounts of
lead.
The sources of both X-rays and gamma rays are
neither of these
Which of the following is quantized?
number of atoms in a gold bar energy radiation electric charge
In the photoelectric effect, the brighter the illuminating light on a photosensitive surface, the greater the
number of ejected electrons.
The high temperature of Earth's interior is mainly due to
radioactive processes.
Which produces an interference pattern when directed through two suitably spaced slits?
sound light electrons
When uranium emits a beta particle, the result is
the first transuranic element.
Most of the radioactivity we personally encounter originates from
the natural environment.
In the equation E = hf, the symbol f stands for
wave frequency.
The thing that "waves" in the Schrödinger equation is a
wave function
Unlike Bohr, Schrödinger viewed electrons as
waves.
