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A dentist uses a mirror to examine a tooth that is 1.00 cm in front of the mirror. The image of the tooth is formed 10.0 cm behind the mirror
Concave mirror is placed near one end of an optical bench. It is aimed to make an image offside from the light source projected onto a screen.
Two spherical waves with the same amplitude, A, and wavelength, lamda, are spreading out from two point sources S1 and S2 along one side of a barrier
A card containing two slits separated center-to-center by 0.1mm, is illuminated by a red laser (lambda = 632:82nm).
Blue light at 480nm impinges perpendicularly on a pair of very narrow parallel slit apertures separated by 0:15mm. A fringe pattern appears on a screen 2m away.
A commonly used potential energy function to describe the interaction between two atoms is the Lennard-Jones potential
What is the root-mean-square speed of chlorine gas molecules at a temperature of 47 degrees C? (Molecular mass of Cl2 = 71)
It has been estimated that the Earth contains 1.0 x 10^9 tons of natural uranium that can be mined economically.
What are the main assumptions of the free electron model?
Legend has it that, many centuries ago, Archimedes jumped out of his bathtub and ran across town naked screaming "Eureka!"
How does the number of atoms in a 26.5 gram gold ring compare to the number in a silver ring of the same mass?
If the translational rms speed of the water vapor molecules (H2O) in air is 664 m/s, what is the translational rms speed of the carbon dioxide molecules
A Ping-Pong ball has a diameter of 3.8 cm and average density of 0.084 g/cm3. What force is required to hold it completely submerged under water?
Why can a harmonic function be used to compute vibrational energy states for a DIATOMIC molecule, and under what conditions are the computed values inaccurate
The kinetic theory of gases states that the kinetic energy of a gas is directly proportional to the temperature of the gas.
Nitrogen may be combined with oxygen in proportion by mass of 1.75 g nitrogen to 1.00 g oxygen to form the gas nitrous oxide, N2O.
The artificial sweetener NutraSweet is a chemical called aspartame (C14 H18 N2 O5).
Polymers, like rubber, are made of very long molecules, usually tangled up. Another very crude model of a rubber band is that each link
Find the maximum wavelength of the photon that a hydrogen atom in its ground state must absorb in order for the ionization to occur.
Assume that the human body is 75% water. How many moles of water are in your body? How many molecules?
The chlorophyll-a molecule, C55H72MgN4O5, is important in photosynthesis.
The carbon monoxide molecule (CO) consists of a carbon atom and an oxygen atom separated by a distance of 1.13 * 10^-10 m. The mass of mc = 0.750 mo
Water is used as the moderator in a PWR. Calculate the mean free path of a thermal neutron in water given that the absorption cross section for thermal neutrons
Take a clear balloon. Add one BB and blow up the balloon to about the size of a softball, then tie it off.
A Ni-Cu alloy is prepared which has a lattice constant of 0.354 nm. The maximum magnetisation of the alloy is measured as 1.25*10^6 A/m.