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a uniform ladder of mass m and length l leans against a frictionless wall if the coefficient of static friction between
under what conditions would the frictional forces be expected to be equal in magnitude for a car moving up an incline
the electron in the b-field an electron moves in a 05nt b-field if the radius of the circular orbit is 1cm what is its
if a force of 10 n is needed to open an 100 cm wide door when applied at the edge opposite the hinges what force must
at a winter fair a 655-kg stunt man is shot from a horizontal cannon that rests at the edge of a frozen lake the human
a concave mirror has a focal length of 442 cm the distance between an object and its image is 681 cm find a the object
light falls on a pair of slits 000198 cm apart the slits are 842 cm from the screen the first-order bright line is 188
a cat is stuck in a tree you are designated with the job to get it out yet you do not want to climb the tree because
a wheel starts from rest and rotates about its axis with constant angular acceleration after 74 seconds have elapsed it
a solid disk rotates in the horizontal plane at an angular velocity of 0049 rads with respect to an axis perpendicular
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