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an object has a total energy of 50 x 1015 j and a kinecticenergy of 20 x 1015 j what is the magnitude of the objects
in designing rotating space stations to provide forartificial-gravity environments one of the constraints that mustbe
one gram of water changes from liquid to solid at a constantpressure of 100 atm and a constant temperature of 0degc in
a mosquito collides head on with a car traveling 60 mphnbsp how do you think the size of the force the car exerts on
an energy of 01 j is stored in the metal ball on top of a vande graaff generator aspark carrying 1 micro-coulomb
a 12000 volt line produces 100000 watts with a current of83 amps if the voltage were only 240 volts what would be the
a moving charge experiences the maximum possible magnetic force when moving in a magnetic field what can you conclude
how many electrons flow through a 1500 watt electric spaceheater operating with a 120 volt input and a current of
a 1-kg wood ball and a 5-kg metal ball have identical shapes and sizes they are dropped simultaneously from a tall
a spring with k 53 nm hangs vertically next toa ruler the end of the spring is next to the 15 cm mark on theruler if a
consider a box in the back of a truck if the truckaccelerates slowly the box moves with the truck without slipping what
on a cello the string with the largest linear density 156 10-2 kgm is the c string this string produces afundamental
an ambulance travels down a highway at a speed of 30 ms itssiren emits sound at a frequency of 400 hz a car istraveling
a flat sheet of ice has a thickness of 20cm it is on top of a flat sheet of crystalline quartz thathas a thickness of
an object weighs 100 n in air it weighs 75 n in waterand 85 n in oilwhat is the density of the objetwhat is the density
how long will it take a 1000w electric plate to bring 05kg of water to boil from a temperature of 20 degrees
a 55 kg swimmer is standing on a stationary 225 kg floating raft the swimmer then runs off theraft horizontally with a
in a double-slit experiment the slit separation is 300 times the wavelength of the light what is the angular separation
no photoelectrons are emitted from a certain metallic surface when the momentum of the photons striking the surface is
to push a 22 kg crate up a frictionless incline angled at20deg to the horizontal a worker exerts a force of 885n
a train at a constant 600 kmh moves east for 21 min then in a direction 620deg east of due north for 290 min and then
a 950 kg person stands on a scale in an elevator what isthe apparent weight in each of the following situationsawhen
in fig 15-53 three 18000 kg ore cars are held at rest on amine railway using a cable that is parallel to the rails
two skaters a man and a woman are standing on ice neglect anyfriction between the skate blades and the ice the mass of
a 719-kg person stands on a scale in an elevator what is the apparent weight when the elevator is aaccelerating upward