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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
a 70 w light bulb operates on a potential difference of 75 va find the current in the bulbab find the resistance of the
three charges are enclosed by three different gaussian surfaces as shown in the diagram below the surfaces sa sb and sc