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an explosion breaks an object into two pieces one of which has 148 times the mass of the other if 7430 j were released
a 610 kg bungee jumper tied to a 370 m long cord leaps off a bridge whose deck is 670 m above the water he falls to 80
a long vertical wire carries an unknown current coaxial with the wire is a long thin cylindrical conducting surface
a curve of radius 68m is banked for a designed speed of 110kmh if the coefficient of the static friction is 034 wet
air conditioners operate on the same principle as refrigerators consider an air conditioner that has 700 of refrigerant
a car moving with an initial speed v collides by a second lighter stationary car that is 417 as massive after the
heather in her corvette accelerates at the rate of 300 - 200ms2 while jill in her jaguar accelerates at 100 300 ms2
the velocity of a 250 kg block sliding down a frictionless inclined plane is found to be 144 ms140 s later it has a
an archer aims an arrow precisely horizontal over a flat field and shoots it at the same instant the archers watchband
although it is uncommon orthopaedic surgeons have seen patients who have torn their biceps tendon when forces of
in a closed subway car a girl holds a helium-filled balloon by a string while the car is travelling at constant
a rod of mass m and length x is supported on a knife edge at its midpoint a ball of clay m is dropped from rest from a
a plucked guitar string produces a sound wave of frequency 440 hz1 what is the wavelength of the sound wave assume the
an object of mass 68 kg is attached to a spring of force constant 1720 nm the object is set into simple harmonic motion
a lens system consists of two lenses180 cm apart the first lens is convex converging and has a focal length of 990 cm
a playground merry-go-round of radius r 200 m has a moment of inertia i 245 kg m2 and is rotating at 90 revmin about
a stone is thrown at an angle of 30 above the horizontal from the top edge of a cliff with an initial speed of 12 ms a
a uniform electric field of 200 knc is in the x direction a positive point charge q300 mc is released from rest at the
some gliders are launched from the ground by means of a winch which quickly reels in a towing cable attached to the
part awhat is the maximum angular momentum lmax that an electron with principal quantum number n5 can havepart bcompute
a moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration at time t 0 the velocity
an experimental bicycle wheel is placed on a test stand so that it is free to turn on its axle if a constant net torque
ken and kim are skating together on a rink at 300 ms ken keeps asking kim how much she weighs annoyed kim pushes away
an electric motor can accelerate a ferris wheel of moment of inertia i 18500kgmiddotm2 from rest to 101revmin in 120s
a disk-shaped merry-go-round of radius 263 m and mass 155 kg rotates freely by an angular speed of 0712 revs a 594 kg