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a girl delivering newspapers travels 2 blocks west 2 blocks north and then 5 blocks easta what is her resultant
a water gun is filled and pumped up it is held horizontal and fired at a height of 95 m above the ground the water
a uniform ladder of mass 50 kg and length 5m leans at an angle theta against a frictionless wall if the coefficient of
a small airplane flies with a speed relative to the ground ground speed of 2190 kmh in a direction 200 degrees to the
the velocity-time graph of part of a cyclists trip consists of a straight line between v 180 ms at t 130 s and v 0
a cannon fires a cannon ball at 99916 ms in a straight line that passes directly over an observers head if the
light of wavelength 730 nm illuminates a pair of slits separated by 0200 mm if a screen is placed 150 m from the slits
a laser beam is incident on two slits with a separation of 010 mm and a screen is placed 400 m from the slits an
a certain cylindrical drum is 3 meters in height it filled with with water atmospheric pressure is 105 pa and the
an airplane is flying with a speed of 305 kmh at a height of 3750 m above the ground a parachutist whose mass is 822 kg
a mass m 24 kg is at the end of a horizontal spring of spring constant k 265 nm on a frictionless horizontal surface
the primary coil of a transformer has n1 390 turns and the secondary coil has n2 2 260 turns if the input voltage
a 16 kg ball is at rest on the floor in a 24 m 24 m 24 m room of air at stp air is 80 nitrogen n2 and 20 oxygen o2 by
an unknown nucleus has twice the volume of a nucleus with 51 nucleons what is the atomic mass number of the unknown
an electron that has an energy of approximately 23 ev moves between rigid walls 18 nm aparta find the quantum number n
for the real or imaginary nucleus of 85x210 finda the net electrical charge of the nucleusb the number of neutronsc the
an ideal gas expands isothermally performing 430times103j of work in the processcalculate the change in internal energy
a you wish to determine the height of the smokestack of a local coal burning power plant you convince a member of the
hot water at 90 degrees c is poured into a large styrofoam cup that contains water at 20 degrees c the final
a classroom demonstration is done with an atwood machine the masses are m1 10 kg and m2 110 kg if the larger mass
a solid disk of radius 650cm and mass 135kg which is rolling at a speed of 270ms begins rolling without slipping up a
two identical coils are parallel to each other on the same axis they are separated by a distance equal to their radius
only about 5 of the energy in the universe is composed of baryonic mattera estimate the average density of baryonic
a double-slit experiment is set up using a helium-neon laser 633nm then a very thin piece of glass n150 is placed over
a ball with a mass of 05kg and a diameter of 04 m floats so acceleration 0 in the ocean salt watera what is the