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a fire helicopter carries a 580 kg bucket of water at the end of a 200 m longcable flying back from a fire at a
a 320 kg steel ball strikes a wall with a speed of100ms at an angle of 600 degrees with the surface it bouncesoff with
a 750 kg stunt man jumps from a balcony and falls 240 mbefore colliding with a pile of mattresses if the mattresses
a diver performing a double somersault spins at an angular speed of49pi rads precisely 070 s after leaving the
a helicopter lifts a 81 kgastronaut 20 m vertically from theocean by means of a cable the acceleration of the astronaut
a simple pendulum 20 m in length is released with a pushwhen the support string is at an angle of 25 from the vertical
a figure skater begins spinning counterclockwise at an angularspeed of 47 pi rads during a 49 s interval she slowly
a beetle sits at the top of a bicycle wheel and flies away just before it would be squashed assuming that the wheel
the driver of a car slams on her brakes to avoid collidingwith a deer crossing the highway what happens to the cars
as a sled moves across a flat snow-covered field at constantvelocity is any work done how does air resistance enter
two objects with masses of 400 kg and 500 kg are connected by a light string that passes over a frictionless pulleya
a 20 microf capacitor and a 40 microf capacitor are connected in parallet across a 300v potential difference calculate
the question states two large parallel conducting plates are 12cm apart and have charges of equal magnitude and
two neutrons are in an infinite square well with l20 fm what is the minimum total energy that the system can have
what is the annual petroleum consumption of the united states and where does this petroleum originate include all
a car is accelerating while its horn is blowing just after the car passes a stationary person the person hears a
freddy and his girlfriend are climbing in the canadianrockies the start from an elevation of 681 meters above sealevel
a physics student playing with an air hockey table a frictionlesssurface finds that if she gives the puck a velocity of
in the figure below a ldquosemi-infiniterdquo nonconductingrod that is infinite in one direction only has uniform
completly lost a projectile is fired vertically upwards air drag dissapates 68 kj during its ascent how much
a person travels by car from one city to another with different constant speeds between pairs of cities she drives
a pacific north west home has a solar photovoltaic pv systemthat produces 1045 mwh of usable electricity peryear their
a truck moves 70 m east then moves 120 m west andfinally moves east again a distance of 90 m if east ischosen as the
a rock is rolled in the sand it starts at 50 ms moves in astraight line for a distance of 30 m and then stops what is
a man holds a pail of water by the handle and whirls it around avertical circle of radius 084 m at constant speed what