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a tightrope walker is practicing she is balanced on a rope at the exact midpoint of the rope the tension in the rope is
a block of mass m1 29 kg initially moving to the right with a speed of 41 ms on a frictionless horizontal track
a 120 kg scaffold is 66 meters long it is hanging with two wires one from each end a 540 kg box sits 1 meter from the
a uniform thin rod of length l25 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its
the current density inside a long solid cylindrical wire of radius a is in the direction of the central axis and its
a ray in a glass is incident onto a water-glass interface at an angle of incidence equal to half the critical angle for
the side-view mirror of an automobile has a radius of curvature of 150 cm the mirror produces a virtual image one-third
a proton is shot at 4 times 107 ms toward a gold atom with a mass 197 times that of the proton and deflects it straight
compare the motion of two objects before a collision with their motion after the collision you should be able to find a
a small 2 g bullet moving at v0 2000 ms inbeds itself in a 1kg block at the top of an inclined plane with an angle of
suppose that the central diffraction envelope of a double-slit diffraction pattern contains 11 bright fringes and the
a 010-mm-wide slit is illuminated by light of wavelength 589 nm consider a point p on a viewing screen on which the
a sled slides along a horizontal surface on which the coefficient of kinetic friction is 028 its velocity at point a is
a car is moving on a flat horizontal circular track of radius 120 m the speed of the car is constant 15ms the mass of
three identical train cars coupled together are rolling east at 16 ms a fourth car traveling east at 44 ms catches up
a uniform marble rolls down a symmetric bowl starting from rest at the top of the left side the top of each side is a
a 16 g ball of clay traveling east at 34 ms collides with a 30 g ball of clay traveling north at 20 ms what are the
an electron moves through a uniform magnetic field given by bx i 240 bx j at a particular instant the electron has
the starting motor of an automobile is turning too slowly and the mechanic has to decide whether to replace the motor
a long solenoid has n 410 turns per meter and carries a current given by i 2801 e160t where i is in amperes and t
at what speed do a bicycle and its rider with a combined mass of 98 kg have the same momentum as a 1350 kg car
you are mowing your grass with an electric lawn mower as you move to taller grass the lawn mower blade slows down what
consider the equation for the velocity of an electromagnetic wave in a wire on the bottom of page 621 under what
when beryllium-7 ions m 1165 x 10-27 kg pass through a mass spectrometer a uniform magnetic field of 0352 t curves
a capacitor with capacitance c 410middot10-6 f is connected to an ac power source having a peak value of 60 v and f