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a car is accelerating while its horn is blowing just afterthe car passes a stationary person the person hears a
a conducting sphere of radius r1 is given a free charge q thesphere is surrounded by an uncharged concentric
if a ball is droped from a building and it takes 28s for the ball to hit the ground what is the speed of the ball what
a 75-kg water skier is being pulled by a horizontal force of520 n an has an acceleration of 24 ms2 assuming thatthe
two people carry a 200-kg crate up stairs the crate is125 m long and 050 m high and its center of gravity is at
a t-shaped body is made from two uniformrods of length 2a by joining the end of one to the midpoint of the other in
a long straight wire carrying a current of 200 a is placedalong the axis of a cylinder or radius 0500 m and a length of
a machine part rotates at an angular speed of 060 rads itsspeed is then increased to 22 rads at an angular acceletation
the apparatus show in firgure p118 was used by joule tomeasure the mechanical equivalent of heat work is done on
three moles of a monatomic ideal gas are heated at a constantvolume of 15 m3 the amount of heat added is 524 x103 ja
a 500kg football is thrown toward the eastwith a speed of 15ms a stationary reciever catches the ball andbings it to
a nuclear power plant has an electrical power output of 1000mw and operates with an efficiency of 33 if excess energyis
two automobiles are equipped with the same single-frequency horn when one is at rest and the other is moving toward
a copper wire is 500 m long andhas a cross-sectional area of 20010-4 m2 this wire forms a one turn loop inthe shape of
a singly charged positive ion has a mass of 236 10-26kg after being accelerated through a potential difference of238 v
a satellite of mass 300kg is circuling around the moon ifsatellites velocity is 150 miles per hour determine the radius
an air bubble has a volume of 180cm3 when it is released by a submarine 120 m below the surface of a lake what is the
a ball is dropped from a height of 150m and rebounds to aheight of 120m approxiamtely how many rebounds will the ball
a positive point charge of magnitude 25 muc is at thecenter of an uncharged spherical conducting shell of inner
a 14 m long glass tube that isclosed at one end is weighted and lowered to the bottom of afreshwater lake when the tube
in the afternoon the decibel level of a busy street is95 db with 100 cars passing at a givenpoint every minute late at
a 4 m string is held fixed at both ends when driven by 108 hzsource the string vibrates in 4 distinct segments what is
an object moving in simple harmonic motion has an amplitude of003m and a maximum acceleration of 55ms2 what is the
a cue ball travelling at 50 msmakes a glancing elastic collision with a target ball of equalmass that is initially at