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suppose that a refrigerator cools to -4 degrees c discharges heat at 20 degrees c and operates with 50 efficiencya how
a friend who is 480 cm tall stands 20m from a plane wall mirror you stand slightly behind him 30m from the wall mirror
a typical automobile engine works with a cylinder temp of 2000 degrees c and an exit temp of 800 degrees c a typical
light in a transparent material index of refraction 1333 strikes the boundary with another transparent material n1010a
calculate the ph of a buffer solution made by mixing 404 g of potassium formate into 1 l of a 009 m solution of formic
a spaceship takes a nonstop journey to a planet and returns in 100 hours according to a clock on the spaceship if the
an ac generator rotating at 60 hz in a 300 gauss field has 1000 turns and produces an rms voltage of 150 volts and an
in a material having an index of refraction n a light ray has frequency f wavelength and speed vwhat is the frequency
a mixture of 0100 mol of co2 0050 mol of h2 and 0100 mol of h2o is placed in a 100 l vessel and reacts according to the
a police academy is training 14 new recruits some are working dogs and others are police officers there are 38 legs in
the sun radiates energy at the rate of approximately 380 x 1026 w assume that this energy is produced by a reaction
a wire carrying a 2a current is placed at an angle of 60 degrees with the respect to a magnetic field of strength 02t
draw the skeletal structure of the major organic product resulting from the following synthesis stepsa benzyl bromide
part anbspnbspnbspnbspnbsp1 m mod nnbspnbsp will have values ranging fromnbsp 0 to n1nbspnbspnbspnbspnbspnbsp2 44 mod 7
a rectangular loop lies next to a long straight wire on the same plane both wires carry a current of 3a determine the
a cooling system is designed to maintain a refrigerator at -10 degrees c in a room at 25 degrees c if 3x104 j of heat
a chemical reaction has k9310-5 1m sec at 200 degrees c if the activation energy ea99 kjmol what is the value of k at
when 155 g of solid thallium i bromide is added to 100 l of water the salt dissolves to a small extenttlbrs tlaq
a magnetic field goes from the top to the bottom of this page what direction will a proton moving from left to the
particle x has a speed of 0790 c and a momentum of 506times10-19 kgms what is the mass of the particlewhat is the rest
draw the least and most stable newman projection and sawhorse representation of 4-bromo-3-chloroheptane and
a cube of 544 cm on a side is placed in a uniform electric field e of 80100 nc with four of its faces parallel to e and
for each reaction shown here predict whether the equilibrium lies predominantly to the left or to the right briefly
one of the main components of hard water is caco3 when hard water evaporates some of the caco3 is left behind as a
suppose an observer measures the length of a stationary spaceship to be 6 m note m for meters if the spaceship is