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a 13 g bullet traveling 235 ms penetratesa 20 kg block of wood and emerges cleanly at 174 ms if the block is stationary
you are standing at a distance d from a speaker that emits sound waves in all directions you walk 250 m toward the
the 2 ml of 02 m solution of naoh was added in 10 ml of 004 m solution of h3po4 calculate the concentration of hpo42-
a 9200 kg boxcar traveling at 18 ms strikes a second boxcar at rest the two sticktogether and move off with a speed of
an ac generator has 90 rectangular loops on its armature each loopis 15 cm long and 6 cm wide the armature rotates at
uranium hexaflouride is a solid at room temperature but boils at 56 c determine the density of uranium hexaflouride at
an ideal gas has a pressure of 25 atm a volume of 10 l at a temperature of 30deg c how many molecules are there in the
a 200 gram block attached to the end of an ideal springhorizontal with force constant k 70 nm undergoes simpleharmonic
a heliox deep-sea diving mixture contains 20 rm g of oxygen to every 980 rm g of helium what is the partial pressure of
a 83 kg solid sphere with a 19 cm radius is suspended by a vertical wire a torque of 041 nmiddotm is required to rotate
a balloon was filled to a volume of 250 rm l when the temperature was rm 300circc what would the volume become if the
a carnot engine operates between a high temperature reservoir at 492 k and a river with water at 290 k if it absorbs
a carnot engine extracts 529 j of heat from a high-temperature reservoir during each cycle and rejects 225 j of heat to
one function of iron-sulfur clusters and heme cofactors is to participate in electron transfer reactions describe how
a disk rotates about its central axis starting from rest and accelerates with constant angular acceleration at one time
a 64-kg man standing on a scale in an elevator notes that as the elevator rises the scale reads 823 n what is the
a neutron star is composed of neutrons and has a density that isapproximately the same as that of a nucleus what is the
an object is released from rest when it is a height habove the surface of a planet of mass m and radiusr what is the
use the following information to identify the diatomic molecule a and the compound b then answer the following
if you move at 14ms toward a 2300hz source that is movingtoward you with a ground speed of 38ms what frequency do you
a particle of charge -60nc is placed at the center of anon-conducting spherical shell of inner radius 20cm and
the sound in a classroom is 68000 times asintense as the minimum threshold of hearing what is the intensity level of
why is it easier to remove electron from the first two energy levels of mg but easier to remove third level electron of
light in a vacuum is incident on a transparent glass slab theangle of incidence is 320deg the slab is then immersed in
a flat sheet of crystalline quartz has athickness of 31 cm it is on top of aflat sheet of diamond that has a