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a sample of helium-4 behaves as an ideal gas as it isheated at constant pressure from 294 k to 404 k if 33 j of work
a researcher heats a 100g piece of unknown material to 150 cand then drops it into an insulated cup holding 300g of
on a soup production line 100l of concentrated brothc1calg c at 90 c will be mixed wth 200l of water aftermixing the
an archers bow is drawn at its midpoint until the tension inthe string is 120 times the force exerted by the archer
the filament of a light bulb has a temperature of 290 103 degc and radiates 66 watts of power the emissivity of the
in an old house the heating system uses radiators which arehollow metal devices through which hot water or steam
the ends of a thin bar are maintained at differenttemperatures the temperature of the cooler end is 13degc while the
atlas and hercules two carnival sideshow strong men each lift200kg barbells 200m off the ground atlas lifts his
on a ski weekend in colorado bob whose mass is 750kg skis downa hill that is inclined at the angle of 150 degrees to
a 30-kg shopping cart full of groceries sitting at the top of a20-m hill begins to roll until it hits a stump at the
a ship carrying freshwater to a desert island in the caribbean hasa horizontal cross-sectional area of 2600m2 at
jose whose mass is 450kg is riding his 50-kg skateboard downthe sidewalk with a constant speed of 60 ms when he rolls
a high-voltage transmission line with a resistance of 032 km carries acurrent of 980 a the line is at apotential of 740
two balls of masses ma 40 g and mb 60 g aresuspended the lighter ball is pulled away to a 60 degreeangle with the
a particular radioactive source produces 150 mrad of 2 mevgamma rays per hour at a distance of 10 ma how long could a
a 190 g sampleof a substance is heated to 324degc and then plunged into a 100 galuminum calorimeter cup containing 175
the radius of a park merry-go-round is 22m to start itrotation you warp a rope around it and pull with a force of 260
if you are driving 108 kmh alonga straight road and you look to the side for 10 s how far do you travel during this in
a student is skateboarding down a ramp that is 60m long andinclined at 18 degrees with respect to the horizontal
the largest barometer built was an oil-filled barometerconstructed in leicester england in 1991 the oils densitywas 847
a swimming pool is 200 m long and 150 m wide itis filled with water to a uniform depth of 4 metersa what is the total
a force of 250 n is applied to a hydraulic jack piston with a01m diametera if the out piston which supports the load
you begin an experiment with 020 m reactant a and 040 m reactant b after the reaction has been allowed to achieve
the reaction of aluminum with hydrocholoric acid can be shown as follows 2ais 6 hciaq --gt 2aici3aq 3h2g how many
a hydrogen ion isaccelerated through a potential of 106 volts and thenenters a magnetic field of strength 44 tesla at