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a 525 g ball movesat 325 ms if its speed ismeasured to an accuracy of 015 what is the minimum uncertainty in its
a 183- cm focal-length lens is used to project 35- mm slidesonto a screen 417 m from the projector lens what must be
a 30 kg brick is completely submerged insaltwater and displaces an amount of saltwater weighing 174 n determine the
a cooling fan is turned off when it is running at 850revmin it turns 1500 revolutions before it comes to astop what is
a constant retarding torque of 12 mn stops a rolling wheel of adiameter 80 m in a distance of 15 m how much work is
a 30 m long wire carrying a current of 10 a through amagnetic field of magnitude 100t experiences a force of 40kn
a 049 kg object connected to a lightspring with a force constant of 180nm oscillates on a frictionless horizontal
a ball with a radius of 15 cm rolls on a surface and thetranslational speed of the center mass is 025 ms what is the
a flat uniform circular disk has a massof 230 kg and a radius of580 cm it is suspended in ahorizontal plane by a
in a dramatic lecture demonstration a physics professor blows hardacross the top of a copper penny that is at rest on a
a uniform solid sphere rolls down an incline a what must bethe incline angle if the linear acceleration of the center
a string is stretched and fixed at both ends 426 cm apart if the density of the string is 0022 gcm and its tension is
a spacecraft power system generates electricity by absorbing heat from a nuclear reactor operating at 500 c and
a water tank springs a leak find the speed of water emerging from the hole if the leak is 30m below the surface of
an outside loudspeaker considered a small source emits soundwaves with a power output of 90 wa find the intensity 110 m
in a refrigerator heat is transferred from a colder area theinside of the refrigerator to a warmer area the air outside
a bicyclist of mass 81 kg puts all his mass on each downward-moving pedal as he pedals up a steep road take thediameter
the 1100-kg mass of a car includes four tires each of massincluding wheels 35kg and diameter 080m assume each tire
asteroid 433 eros is one of the largest near-earth asteroids forpurposes of this problem assume it is spherical the
a pendulum consists of a mass m suspended by a massless springwith unextended length b and spring constant kthe
a small light source at the bottom of a swimming pool that is30 m deep emits light uniformly in all directions
a stone is tied to a string length 0972 m and whirled in a circle at the same constant speed in two different ways
an astronaut is orbiting a black hole with a mass of20x1031 kg at a distance of 126km from its center the astronaut is
the wheels of an automobile are locked as it slidees to a stop from an initial speed of 267 ms if the coefficient of
a bullet mass 10 g is fired horiztally into a block of wood weighing 2000 kg and suspended like a ballistic pendulum