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a sledge loaded with bricks has a total mass of 170 kg and is pulled at constant speed by a rope the rope is inclined
an object of mass 293 kg moving with an initial velocity of 490i ms collides with and sticks to an object of mass 308
a how much work is required to pull him a distance of 580 m up a 270deg slope assumed frictionless at a constant speed
a friend buys a used pickup truck that comes complete with a cb radio however the antenna is broken off and your friend
tarzan swings on a 280-m-long vine initially inclined at an angle of 370deg with the verticala what is his speed at the
a bronze cannon ball with a mass of 45 kg is fired vertically from a small cannon and reaches a height of 130 m if the
a tetherball leans against the smooth frictionless post to which it is attached see the figure the string is attached
a 5kg object is initally at rest the object is acted on by a 9n force toward the east for 3 seconds no force acts on
a satellite is in a circular orbit around and unknown planet the satellite has a speed of 170 x104 ms and the radius of
in a circus performance a monkey on a sled is given an initial speed of 46 ms up a 23 incline the combined mass of the
a child slides without friction from a height of 101 m above the water along a curved water slide in the shape of a
a daredevil on a motorcycle leaves the end of a ramp with a speed of 405 ms as in the figure below if his speed is 383
a 700-kg crate slides 300 m down a ramp inclined at 550ordm below the horizontala if there is no friction between the
an electron is trapped in an infinite square-well potential of width 07 nm if the electron is initially in the n 4
a uniform electric field of magnitude 226 vm is directed in the negative y direction a 100 uc charge moves from the
a radio antenna broadcasts a 10 mhz radio wave with 28 kw of power assume that the radiation is emitted uniformly in
the magnetic field of an electromagnetic wave in a vacuum is bz25 microtsin19107 x-2314ft where x is in m and t is in
a 1200-turn coil of wire that is 21 cm in diameter is in a magnetic field that drops from 014 t to 0 t in 12 ms the
a flywheel turns through 22 rev as it slows from an angular speed of 23 rads to a stopa assuming a constant angular
a charge q 562 micro coulons is located at the center of a regular tetrahedron a four- sided surfacea find the total
a particle of mass 0350 kg is attached to the 100-cm mark of a meterstick of mass 0125 kg the meterstick rotates on the
a block with mass 20 kg is on a horizontal frictionless surface and is placed against a compressed spring that has
a circuit consists of a 90-v battery connected to three resistors 37 17 and 150 in seriesa find the current that
a 60-v generator supplies 45 kw of power how much current does the generator
the current in a 120-v reading lamp is 25 a if the cost of electrical energy is 0090 per kilowatt-hour how much does it