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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
a hydrogen ion isaccelerated through a potential of 106 volts and thenenters a magnetic field of strength 44 tesla at
when four people with a combinedmass of 340kg sit down in a car they findthat the car drops 050cm lower on its springs
a rocket of mass 45 x 105 kg is accelerating straightup its engines produce an upward thrust of 75 x106 n and the air
the water skier has a mass of 73 kg find the magnitude of the netforce acting on the skier whena she is accelerating
a pile driver is a device used to drive stakes into the groundwhile building a fence adam drops a pile of mass 3000kg
marisa does 32j of work to lower the window shade in herbedroom a distance of 80m how much force must marissa exert
at target prctice scott holds his bow and pulls the arrowback a distance of 030m by exerting an average force of 4000n
a string is 590cm long and has a mass of 300 ga wave travels at 495ms along this string a secondstring has the same