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a car has aconstant speed of 170 ms on a road the car goes through a dip inthe road whose radius of curvature is 650 m
the earth spins on its axis once a day and orbits the sun once ayear 36524 days in each case take the positive
an object weighing 330 n in air isimmersed in water after being tied to a string connected to abalance the scale now
a car of mass 1440 kg rests on a hydrauliclift with a piston of radius 026 m thatis connected to a second piston of
the space shuttle in a 300km high orbit needs to perform anexperiment that has to take place well away from the
to push a stalled car you apply a 470j force at a 17oangle to its direction of motion doing 860j of work in theprocess
the space shuttle is in a 300-mile-highorbit calculate1 what is the shuttles orbital periodin minutes2 what is the
a string is wound on a uniform metallic ring which can rotate about an axis through its center the mass of the ring is
a 873 kg dragster starting from rest attains a speedof 263 ms in 059 sa find the average accerleration of the dragster
a hollow cylinder hoop is rolling on a horizontal surface at a speed v33 ms when it reaches a 15 degree inclinea how
a u-tube contains liquid of unknown density an oil of density 787kgm3 is poured into one arm of the tube until the
romeo is chucking pebbles gently up to juliets window and hewants the pebbles to hit the window with only a
a lead block is suspended from the underside ofa 05 kg block of wood of density of 668 kgm3 if theupper surface of the
an object is solid throughout when the object is completelysubmerged in ethyl alcohol its apparent weight is 151 n when
the luxury linerqueen elizabeth 2 has a diesel-electric powerplant with amaximum power of 87 mw at a cruisingspeed of
a guitarstring is 60 cm long the string has a mass of 18g and isunder a tension of 945na calculate the wave velocity of
one end of a string 15 m long is moved up and down with a simpleharmonic motion at a frequency of 30 hz the waves reach
an 92 kg man standing erect steps off a 4 m high diving platform and begins to fall from rest the man comes to rest 25
two loudspeakers are placed 300meters apart as shown in thefigure they emit 494 hz sounds in phase a microphoneis
a beam of light is incident from air on the surface of a liquid ifthe angle of incidence is 300deg and theangle of
a cart starts from rest and accelerates at 40 ms2 for 50 s thenmaintain that velocity for 10 s and then decelerates at
four identical charges 22 muc each are brought frominfinity and fixed to a straight line each charge is 047 m fromthe
a square single-turn coil 025 m on aside is placed with its plane perpendicular to a constant magneticfield an emf of
a bridge of length 500 m and mass 810x 104 kg is supported on a smooth pier ateach end a truck of mass 320 x104 kg is
a student sits on a swivel seat initially the student is at restholding a spinning bicycle wheel that has an angular