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the uncertainty of the position of an electronis 046nm calculate the minimal uncertainty of its
a beam of light has a frequency of 367x1015 hz itis projected into a metal electrons are liberated with a maximumenergy
the acceleration of gravity on mars is 37 ms2 if anastronaut can jump upward 20cm on the earths surface how high could
a rifle with a barrel length of 610 cmfires a 100 g bulletwith a horizontal speed of 360 rm ms the bullet strikes a
on the apollo 14 mission to the moon astronaut alan shepard hit agolf ball with a 6 iron the acceleration due to
two children use a homemadetelephone consisting of two paper cups connected by an aluminumwire which is 84 m longa
a girl throws a ball at a vertical wall 4 m away the ball is2 m above the ground when it leaves the girls hand with an
a uniformly charged thin ring has a radius 150 cm and has totalcharge 240nc an electron is placed on the rings axis a
a shot-putter accelerates a 73 kg shot from rest to 14 ms if this motion takes 20 s what average power was
an airplane accelerates down the runway assume the jetengines exerts a constant force on the airplane and assume
a certain kind of glass has an index of refraction of 1650for blue light of wavelength 430nm and an index of 1615 for
an induced emf of 12v is produced when a 350 loop coil ofradius 42cm is placed perpendictular to a megnetic fieldand
a 36cm strip of wire is connected to a battery andperpendictular to the magnetic field of a solenoid is 15cm long
a transformer has 3840 turns in the secondary the inputvoltage is 110v the output current is 65a the input current
a 055 kg book slides on ahorizontal table the kinetic friction force on the book hasmagnitude 12 na how much work is
the luxury liner queen elizabeth 2 has adiesel-electric powerplant with a maximum power of 84 mw at a cruising speed of
a 25 gram mass is placed on the edge of a turntable witha 15 cm radius the coefficient of static friction between
a slingshot will shoot a 19 g pebble270 m straight upa how much potential energy is stored in the sling shots rubber
a stalactite on the roof of a cave drips water at a steadyrate to a pool 40m below as one drop of water hits the poola
a civil engineer is in charge of building a section of theinterstate that includes a turn whose radius is 80m what will
nora jogs several times a week and always keeps a journal ofhow much time she runs one day she forgets her stopwatch as
when a trains velocity is 120ms eastward raindropsthat are falling vertically with respect to the earth make tracesthat
car is traveling at constantspped passes a car stopped it accelerates at 7ms2 what is final velocity of originally
a 50-kg pilot comes out of a vertical dive in a circular arcsuch that at the bottom of the arc her upward acceleration
a skateboard track has the form of a circular arc with a 360m radius extending to an angle of 900 degrees relative to