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an electrically neutral model airplane is flying in ahorizontal circle on a 30-m guideline which is nearly parallel
a disabled tanker leaks kerosene n 120 into thepersian gulf creating a large slick on top of the watern 130 a if you
a charge q 56 muc is placed at the origin and asecond charge q -42 muc is placed at x 1m find the electric potential
the speed of a bobsled is increasing because it has anacceleration of 26 ms2 at agiven instant in time the forces
the contraction of the left ventricle chamber of the heartpumps blood to the body assuming that the inner surface of
a rocket of mass 45 x 105 kg is in flightits thrust is directed at an angle of 540deg above the horizontal and has a
a certain brand new never-used 15 volt cell contains40mc of charge what is the amount of electricenergy stored in the
the attractive electrostatic force between thepoint charges844106 c and q has a magnitude of 0975 n when the
the electric field at the surface of a charged solid coppersphere with radius 0210 m is3380 nc directed toward the
a 75kg skier rides a 2830m long lift to the top of amountain the lift makes an angle of 146 degrees with thehorizontal
a cyclist approaches the bottom of a gradual hill at a speedof 11 ms the hill is 50m high and the cyclist estimatesthat
a scuba diver has her lungsfilled to half capacity 2 l when she is 12 m below thesurface the acceleration of gravity is
calculate how much work is done when 5 moles of an ideal gas at27ordmc expand is othermally from an initial volume of 1
light of wavelength 480 nm in air falls ontwo slits 6 10-2 mm apart the slits are immersed inwater as is a viewing
an iron ball is suspended by a thread of negligible mass from an upright cylinder that floats partially submerged in
while on the surface of the planet mars a mass of 1 kginitially at rest falls a height of 1m onto a spring the spring
an artillery shell is fired with an initialvelocity of 300 ms at 520deg above the horizontal to clear an avalanche
a tuning fork with a frequency of 440 hz is held above a resonance tube that is partially filled with water assuming
what effect does the magnetic field have on the speed of the particlewhat are the magnitude of the acceleration of the
a steel cable is to support an elevator whose total loadedmass is not to exceed 2900 kg if themaximum acceleration of
two automobiles each of mass 1000 kg are moving at the same speed 20 ms when they collide and stick togethernbsp in
an iron bolt is used to connect two iron plates together thebolt must withstand shear forces up to about 3150 n
a 72 kg person has an apparentmass of 45 kg because of buoyancywhen standing in water that comes up to the hips
the helicopter in the drawing is moving horizontally to theright at a constant velocity the weight of the helicopter
copper has two naturally occurring isotopes cu-63 has a mass of 62939 amu and relative abundance of 6917 use the atomic