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a lead block is suspended from the underside ofa 05 kg block of wood of density of 668 kgm3 if theupper surface of the
a certain liqid boils at 420 c its standard entropy of vaporization at that temperature is 894 j k -1mol -1 calculate
an object is solid throughout when the object is completelysubmerged in ethyl alcohol its apparent weight is 151 n when
consider the ground state neutral anion and cation species of each of the following homonuclear diatomics in each case
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
a laser produces 200 mw of red light in 1 hour the laser emits 229 x 1020 photons what is the wavelength of the
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
the iodine molecule can be photodissociated into iodine atoms in the gas phase with light of wavelengths shorter than
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
how does ksp govern the dissolution of an insoluble solid determine the number of moles if io3- simply by knowing the
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
a wind turbine is initially spinning at a constant angular speedas the winds strength gradually increases the turbine
in a particular crash test an automobile of mass 1217 kg collides with a wall and bounces back off the wall the x
a 0031 kg bullet is fired verticallyat 210 ms into a 015 kg baseball that is initially at rest how high does the
a railroad car of mass 290multiplied by 104 kgmoving at 300 ms collides andcouples with two coupled railroad cars each
a 700 kg person throws a 00500 kg snowball forward with a ground speed of250 ms a second person with a massof 550 kg
a car with a 65 cm diameter wheel travels 30 km how many revolutions does the wheel make in this
high-speed stroboscopic photographs show that the head of a200 g golf club is traveling at58 ms just before it strikes