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a 0180 kg potato is tied to a string with length 260 m and the other end of the string is tied to a rigid support the
a simple pendulum of length 20 cm and mass 50 g is suspended in a race car travelling by a constant speed 70 ms around
a 460-m-wide river has a uniform flow speed of 21 ms during a jungle and toward the eastnbsp an explorer wishes to
060 kg of ice at -10oc is placed in 030 kg of water at50oc how much liquid water is there when the system reaches
a locomotive is pulling 13 freight cars each of which is loaded by roughly the same weight the mass of each can be
a 580 kg girl weighs herself by standing on a scale in an elevatora what is the force exerted with the scale when the
a 200kg block is at rest on a horizontal table the coefficient of kinetic and static friction among the table and the
an explosion breaks an object into two pieces one of which has 240 times the mass of the other if 7100 j were released
professor johnsonrsquos glasses have a front radius of 012m and a back radius of -008m what is the focal length of his
a telescope has a two ft mirror how far apart in angle can the instrument distinguish two individual stars for blue 420
a 500 ohm resistor can safely dissipate a maximum power of 350 watts the resistor is linked to a 400 volt battery the
a skier of mass 64 kg starts from rest at the top of an 18deg slope points her skis straight down the slope and lets
a 1400 kg car has a maximum power output of 150 hp how steep a hill can it climb at a constant speed of 74 kmh if the
two objects a and b are rubbed together as a result object a acquires an excess negative charge while object b becomes
an electron that has energy of approximately 80e01 ev moves among rigid walls 13 nm aparta discover the precise energy
piles of snow on slippery roofs can become dangerous projectiles as they melt think a chunk of snow at the ridge of a
a baseball is struck by a bat 46 cm from the axis of rotation when the angular velocity of the bat is 70 rads if the
two small metallic spheres each of mass 020 g are suspended as pendulums with light strings from a common point as
in electronics it is customary to describe the potential of ground thinking of the earth as a large conductor as zero
the average person passes out at an acceleration of 7g that is seven times the gravitational acceleration on earth
copper has 85 x 1028 free electrons per cubic meter a740-cm length of 12-gauge copper wire that is 205 mm in diameter
a thin film of oil n 110 is located on a smooth wet pavement when viewed perpendicular to the pavement the film
an object is thrown straight up two seconds later it is still going upward and at that time its speed is 10ms1 what was
two diamonds begin a free fall from rest from the same height 11 s apart how long after the first diamond begins to
an underground telephone cable consisting of a pair of wires has suffered a short somewhere along its length at point p