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a 630 m length of insulated copper wire is wound to form a solenoid of radius 17 cm the copper wire has a radius of 053
an electron is located on a pinpoint having a diameter of 629 microm what is the minimum uncertainty in the speed of
a snowboarder of mass 73 kg slides down the trail shown in the figure below the first part of the trail is a ramp that
a voltage v 110 v sin t in si units is applied across a series combination of a 192 h inductor a 125 microf capacitor
a farmer named ben attempts to remove an 80-kg rock from his field he applies a force of 789 n for 10 seconds but could
a professors office door is 099 m wide 22 m high 42 cm thick has a mass of 27 kg and pivots on frictionless hinges a
to throw the discus the thrower holds it with a fully outstretched arm starting from rest he begins to turn with a
a 500 g ball swings in a vertical circle at the end of a 14-m-long string when the ball is at the bottom of the circle
two containers hold identical amounts of a monatomic gas at 20 container a is rigid container b has a piston with a
a well-engineered ski jump is less dangerous than it looks because skiers hit the ground with very small velocity
standing on the ground 27 m from the wall of a building you want to throw a package from your 16 m shoulder level to
in a conversion from military to peacetime use a missile with a maximum horizontal range of 160 km is being adapted for
a motorcyclist driving in a 60 rm kmh zone hits a stopped car on a level road the cyclist is thrown from his bike and
a block of mass 17kg is in a spring k 250nm2 compressed 30m the spring is frictionless but friction exists past the
a 25kg cannonball is fired from the top of a cliff the cannonball leaves the cannon at a height of h75 m above the
an ultrasound unit sends a 24 mhz sound wave into a 35cm long tube filled with an unkown liquid a small microphone
a 2000-kg car accelerates uniformly from rest to 30 ms in a time of 20 s what is the net force acting on the
the drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 361000
a person who weighs 715 n is riding a 98-n mountain bike suppose the entire weight of the rider and bike is supported
a 30 kg particle with velocity v 50 ms - 60 ms is at x 30 m y 80 m it is pulled by a 70 n force in the negative x
a typical adult ear has a surface area of about 190 10-3 m2 the sound intensity during a normal conversation is about
the middle c string on a piano is under a tension of 644 n the period and wavelength of a wave on this string are 382
unpolarized light passes through two polaroid sheets the transmission axis of the analyzer makes an angle of 219deg
a bullet with an initial velocity of 300ms and a mass of 5g is fired into a block of wood the bullet is brought to a
postively charged aluminum ion al3 has a mass of 450-26 kg after being accelerated through a potential difference of