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if the length of a wire conductor were to double how would the resistance change why is resistivity call a material
susans 130 kg baby brother paul sits on a mat susan pulls the mat across the floor using a rope that is angled 30above
block a has a mass 30 kg block b has a mass 20 kg and block c has a mass 10 kg the three blocks are on a frictionless
a car coasts down a hill with a 60 grade 60 foot drop for every 100 feet of horizontal distance at a constant speed of
astronauts and space enthusiasts have tried for a long time to figure out ways in which gravity could be somehow
1nbsptwo cars collide at an icy intersection and stick together afterward the first car has a mass ofnbsp1450nbspkg and
1 describe the total internal reflection give an example2 give at least 3 examples from the electromagnetic spectrum
the air inside a bicycle tire pump has 194 joules of work done on it as 979 joules of heat are added to it what is the
a product enters a tunnel dryer with 56 moisture content wet basis at a rate of 10 kgh the tunnel is supplied with 1500
in 1962 measurements of the magnetic field of a large tornado were made at the geophysical observatory in tulsa
explain the relationship between range of motion and joint stability including examples of joints with different number
capacitorsnbspc1nbspnbsp80nbspmufnbspandnbspc2nbsp 20nbspmufnbspare charged as a parallel combination across
1 determine the amount of heat required in calories and joules to raise 230 g of a liquid from 22degc to 28degc the
if a force of 28 n is applied to an object with a mass of 3 kg the object will accelerate atms2an automobile with a
a ball of mass 2kg is thrown down at vi -8ms from a height hi of 245m it bounces back up to a maximum height of hf
you are carrying your three-year-old niece on your shoulders in an elevator that is moving up with aconstant
a dump truck is sitting at the top of a hill and its parking brake disengages it rolls down a hilland collides with an
squids and octopuses propel themselves by expelling water they do this by keeping water in a cavity and then suddenly
a freight train has a mass of 10 107 kg if the locomotive can exert a constant pull of 71 105 n how long does it take
the quarter-car weight of a certain vehicle is 500 lb and the weight of the associated wheel and axle is 150 lb the
a crate of weight w is being pushed across a horizontal surface by a force directed at an angle of 20deg below the
a 2315-kilogram roller coaster car starts at point a almost at rest it first runs downhill and then is approaching a
a 1859-kilogram roller coaster car is approaching a valley at its bottom the valley can be described by a circle with
if a moving car of total mass 1330 kg has four wheels each with rotational inertia of 0601 kg middotm2 and radius of 35
a jet fighter flying at 300 ms just below the speed of sound makes a turn of radius 270kma what is its centripetal