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the balloon contains 030 mol of helium starts at a pressure of 120kpa and rises to an altitude where the pressure is
discover the electric energy density among the plates of a 225-f parallel-plate capacitor the potential difference
a positive point charge q124times105c is fixed at the origin of coordinates and a negative point charge q256times106c
consider three identical metal spheres a b and c sphere a carries a charge of -10q sphere b carries a charge of 7q
two point charges are on the x-axis a 80 microc charge is at x 2 m and a -2 microc charge is at x 4 m where can a
pure-wavelength light passes during a double slit producing a first-order maximum at an angle of 146deg at what angle
a capacitor consists of two closely spaced metal conductors of large area separated by a thin insulating foil it has an
to recharge an 180 v battery a battery charger should move 439times105 c of charge from the negative terminal to the
a point charge 20c is at the origin and a second point charge -30c is at x 50 cm1 compute the potential at x -50 cm
a charge of 600mc is placed at each corner of a square 0260m on a side1 decide the magnitude of the force on each
a proton is traveling horizontally to the right at 420times106 ms 1 discover magnitude and direction of the weakest
the electric potential at a position located a distance of 213 mm from a positive point charge of 660times10-9c and 118
an electron has an initial velocity of 800106 ms in a uniform 500105 nc strength electric field the field accelerates
a penny is made of copper-coated zinc can a calorimetric experiment be devised to test for the metal content in
a particle with a charge of -600 nc is placed at the center of a non conducting spherical shell of inner radius 200cm
a non conducting solid sphere of radius 290 cm carries a uniformly distributed positive charge of 770times10-9 c1
presume that the range of output frequencies is from 685 hz to 157 khz for a pipe organ take 343 ms for the speed of
you cool a 1200g slug of red-hot iron temperature 745 c with dropping it into an insulated cup of negligible mass
a tube with a cap on one end but open at the other end has a fundamental frequency of 1307 hz the speed of sound is 343
a 50-cm length of wire has a mass of 86 g it is stretched among two fixed supports and is under a tension of 200 n what
sometimes when the wind blows across a long wire a low-frequency moaning sound is produced this sound arises because a
a string that is fixed at both ends has a length of 228 m when the string vibrates at a frequency of 857 hz a standing
the entrance to a large lecture room consists of two side-by-side doors one hinged on the left and the other hinged on
a listener is standing in front of two speakers that are producing sound of the same frequency and amplitude except
you are riding your bicycle directly away from a stationary source of sound and hear a frequency that is 26 lower than