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soles of boots that are designed to protect workers from electric shock are rated to pass a maximum rms current of 15ma
a heat engine absorbs qh 3385 j of heat from a reservoir at th 650ordmc and rejects qc 2660 j to a reservoir at th
what is the wavelengths associated with an electron moving at 15x108 cms and a 60g tennis ball moving 1500 cms which
four gram-moles of an ideal monatomic gas initially at temperature 300 k is compressed adiabatically from a volume of
two and one-half kg of ice at temperature t 0ordmc is melted into water at the same temperature by placing it in
write balanced reaction equations for the reacions involved a when aspirin dissolves in aqueous nahco3 and b when
one gram-mole of an ideal gas initially occupies v1 50 l at p1 117 kpa and then expands to v2 100 l at constant
the eyepiece of a compound microscope has a focal length of 260 cm and the objective lens has 0760 cm if an object is
the threshold frequency of dislodging an electron from a zinc metal surface is 854x1014 hz calculate the minimum amount
although acetanilide and phenacetin arent appreciably acidic acetaminophenlike aspirin is a stronger acid than
there is strong evidence that the center of the milky way galaxy contains a giant black hole with a mass of perhaps one
use daltons law and the vapor pressure of water at 22c to compute the partial pressure of hydrogen gas in the
a charged conducting sphere has a radius of 100 cm and is surrounded by an electric field the field strength at the
emergency treatment of cardiac arrest victims sometimes involves injection of a calcium chloride solution directly into
a cube of side of length 055 m has a temperature of 310 k and is in a room surrounded by 158ordmc walls if the
a certain lightbulb has a tungsten filament having a resistance of 16 at 22degc and 155 when hot assume r r01 t -
a 54 m-long rod of constant diameter 46 mm is made of 20 m of copper and the remainder of aluminum see above if the
normal blood contains 3 meql of mg2 how many milligrams of mg2 are present in 1500 ml of
describe fluorescence and phosphorescence use pe curves to help compare and contrast the two terms also discuss why the
aqueous ammonia is commercially available at a concentration of 160 m how much of the concentrated solution would you
a 100-m long string is moved up and down with simple harmonic motion with a frequency of 33 hz the crests of the wave
a circular pan of radius b 1010 cm has a plastic bottom and metallic side wall of height h 220 cm it is filled with
please tell for each individual solution which ions are expected to hydrolyze if any and what the spectator ions are1 m
a 050-kg mass is attached to a spring of spring constant 20 nm along a horizontal frictionless surface the object
what is the boiling point of a solution produced by adding 510g of cane sugar molar mass 3423gmol to 21kg of water for