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an electron is trapped in a one-dimensional infinite potential well that is 310 pm wide the electron is in its ground
decide the potential difference among the ends of a wire of resistance 50 omega if 720 c passes through it per
a child swings a 038-kg ball in a circle on a string that is 13 m long if the ball makes 12 revs what is the magnitude
an object is placed to the left of a lens and a real image is formed to the right of the lens the image is inverted
a 10m uniform beam of weight 100 n is supported by two ropes at the ends if a 400n person sits at 20 m from the left
a middle-aged man typically has poorer hearing than a middle-aged woman in one case a woman can now begin to hear a
two rocket ships approach earth from opposite directions each with a speed of 08 c relative to earth what is the speed
the pressure dissimilarity between the 40-cm-wide input end of a venturi tube and the 20-cm-wide narrow constriction is
a how much power is radiated with a tungsten sphere emissivity e 035 of radius 22cm at a temperature of 25 degrees
a 540 kg ice-skater moving at 64 ms glides to a stop assuming the ice is at 0degrees celsius and that 50 of the heat
while driving at a constant speed of 66 kmh you are passed by a car traveling at 120 kmh the frequency of light emitted
a 490 kg ballet dancer stands on her toes through a performance with four square inches 260cm2 in contact by the floor
a 1986 kg oldsmobile traveling west on saginaw street at 160 ms is unable to stop on the ice covered intersection for a
a block of mass 578 g is pushed against the spring by spring constant 74nm located o the left-hand side of the track
1 how much energy can be obtained from conversion of 10 gram of mass2 how much mass could this energy raise to a height
two pints a and b on the surface of the earth are at the similar longitude and 60o apart in latitude assume that an
a cylinder has a diameter of 16 cm the water level in the cylinder is maintained at a constant height of 043 mif the
a vacuum cleaner produces sound by a measured sound level of550 dba what is the intensity of this sound in wm2b what is
starting from rest at t 0 s a wheel undergoes a constant angular acceleration when t 17 s the angular velocity of the
1 how many transitions involving the hydrogen energy levels solid lines shown in the diagram correspond to photons of
a man pushes a lawn mower on a level lawn by a force of 215 n if 31 of this force is directed downward and 50 w of
a 50-kg mass by an initial velocity of 40 ms east collides with a 40-kg mass with an initial velocity of 30 ms west
the potential in a region among x0 and x6m is vabx where a11 v and b -5vm1 determine the magnitude and direction of the
a ray of light is incident on a flat surface of a block off utilize quartz that is surrounded by water the angle of
a piece of aluminum has density 270 gcm3 and mass 775g the aluminum is submerged in a container of oil of density 0650