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An object is placed 30 cm to the left of a converging lens of focal length f1= + 20 cm. A second lens sits 40 cm to the right of the first lens
A layer of oil of thickness 200nm floats on top of a layer of water of thickness 400nm resting on a flat metallic mirror.
If 200 volts are put across a 300-loop transformer's primary coil:
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.
What is the root-mean-square speed of chlorine gas molecules at a temperature of 47 degrees C? (Molecular mass of Cl2 = 71)
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.
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.
We have at our disposal an amount of energy equaling 3.5 kJ and we wish to allocate it in 1 mole of gas which occupies volume V
Use the following working values for the physical constants:
A fisherman catches two striped bass. The smaller of the two has a measured length of 93.46 cm(two decimal places, four significant figures)
An approximation for the potential energy of a KCl molecule is U=A[(R^7/8r^8)-(1/r)], where R=2.67*10^-10m and A=2.31*10^-28J*m.
Streamlines represent the path of the flow of a fluid. You can imagine that they represent a time-exposure photograph that shows the paths
A water molecule can vibrate in various ways, but the easiest type of vibration to excite is the "flexing" mode in which the hydrogen atoms
An atom of mass m moving in the x direction with speed v collides elastically with an atom of mass 3m at rest.
Three coplanar forces act on a 75000.0 kg object in outer space, where there is no gravity: 14.2 kN directed at 357°, 25.6 kN at 138°, and 16.4 kN at 255°.
A uniform spherical planet has mass M= 8.5 E 25 kg and radius R= 7.5 E 6 m.
Assume the earth to be a uniform spherical planet, mass M= (5.98 E 24) kg. (The number, in scientific notation, means '5.98 times 10 to the 24')