Flashcards in Final Deck (81)
The ratio of energy to frequency for a photon gives
In the relativistic case, doubling the speed of an electron causes its wavelength to
decrease to less than one-half
If the position of an electron is measured very precisely there is an uncertainty in measuring its
The elements in the periodic table that have completely filled shells or subshells are referred to as
Ionic bonding is caused by
the transfer of electrons between atoms
An unfilled electron state in the valence band is called
In beta minus decay, the number of neutrons in the nucleus
is decreased by 1
The fuel for nuclear fission
If the Earth is located 10% nearer to the Sun than the real location, what is the total sunshine energy on the Earth?
about 20% more
The Sun and planets formed about -- years ago
What is the electric charge of d-quark?
What element (oxygen, iron, carbon, silver, silicon) was made only by the supernova explosion?
The dark matter is expected to be attracted by --
The most stable element in the universe, one that is energetically unfavorable to both fission and fusion is
The temperature of the universe at 1 second after the Big Bang was about
When light enters a material of higher index of refraction, its speed
A light ray is reflected by two mirrors that are perpendicular. The new direction of the ray is -- degrees from the original direction
An object is placed in front of a convex mirror at a distance larger than twice the focal length of the mirror. The image will appear
upright and smaller
The chromatic aberration in lenses is due to the -- of light by the lens
A piece of wood is floating in a bathtub. A second piece of wood sits on tops of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to the water level in the tub?
It does not change
Bernoulli's principle is a statement of the conservation of
When a bimetallic strip is heated, the strip will bend toward the side with the -- coefficient of linear expansion
When both the pressure and the absolute temperature of an ideal gas are increased each by a factor of two, the volume occupied by the gas will
A mole of diatomic oxygen molecules and a mole of diatomic nitrogen molecules at STP have the same number of --
A sample of an ideal gas is slowly compressed to 1/2 its original volume with no change in temperature. What happens to the average speed of the molecules in the sample?
it does not change
The heat required to change a substance form the solid to the liquid state is referred to as the
heat of fusion
The process whereby heat flows by means of molecular collisions is referred to as
Relative to a stationary observer, a moving object appears -- than normal
What property of the beam of light applies to a laser beam?
it is coherent