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the drawing shows a uniform horizontal beam attached to avertical wall by a frictionless hinge and supported from below
a transformer consisting of two coils wrapped around an iron coreis connected to a generator and a resistor as shown in
a horizontal wire carries a current i 180 a a secondwire is suspended parallel to it if the second wire carries 20 aand
1 as far as an astronomer is concerned a metal referstoa any elementb any element excepthydrogenc any element
the moment of inertia of a 098-kg bicycle wheel rotating about itscenter is 013kg m2 what is the radius of this wheel
when a pitcher throws a curve ball the ball is given a fairly rapid spin if a 015-kg baseball with a radius of 37cm is
the fastest that anyone has gotten to the top of a local mountain elevation change of 3500 ft is 44 minutes assume a
a 120 v battery is connected inseries with a resistor and an inductor the series circuit has atime constant of 597
a rock climber throws a small first aid kit to another climberwho is higher up the mountain the initial velocity of
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