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two bodies having masses m130g and m240g are attached to the ends of a string of negligible mass and suspended from a
the speed v of sound waves in air depends on the atmospheric pressure p and density r of the air by using the method of
one mole of a monatomic gas at 400 k is reversibly taken to half of its original volume by an isobaric process how much
a paddle wheel frictionally adds thermal energy to an ideal monatomic gas in a sealed insulated container the paddle
four charges are arranged on the corners of a square as shown a fifth charge is located in the middle of the square
500 kg of liquid water is heated to 1000 degc in a closed system at this temperature the density of liquid water is 958
if you had two bars of iron ndash one magnetized and one un-magnetized ndash and no other material at hand how could
use the uncertainty principle to estimate the size of an h atom and the energy of the ground statethen assuming some
in class were talking about a scanning tunnelling microscopyin the example a sharp metallic tip is held just above a
frames k and k are inertial frames frame k is moving at a velocity of magnitude v realtive to frame k in the direction
consider a particle in the ground state of the harmonic oscillatora obtain the wavefunction in momentum spaceb
an object in equilibrimhas three forces exerted on it a 33n force acts at 90 degrees and a 44n force acts at 60 degrees
suppose the skin temperature of a naked person is 35 c when the person is standing inside a room whose temperature is
two cylindrical glass beads each of mass m 32 mg are set on their flat ends on a horizontal insulating surface
four point charges q are fixed to the four corners of a square that is 112 cm on a side an electron is suspended above
two charged objects experience a mutual repulsive force of 071 n if the charge of one of the objects is reduced by half
liquid water at 25c and 1 bar fills a rigid vessel if heat is added to the water until its temperature reaches 50c what
romeo is chucking pebbles gently up to juliets window and he wants the pebbles to hit the window with only a horizontal
two firecrackers explode at the same place in a laboratory and are separated by a time of 3 years as measured on the
a person rides in an elevator that is shot upward out of a cannon think of the elevator after it leaves the cannon and
309 moles of neon a monatomic gas starts out at conditions of standard temperature and pressure the gas is heated at
a carnot engine uses hot and cold reservoirs that have temperatures of 1850 and 845 k respectively the input heat for
in a region of two-dimensional space there are three fixed charges 1 mc at 0 0 minus2 mc at 12 mm -7 mm and 3 mc at -6