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a 108 gcube of ice at 0degc is dropped into 10 kg of water that wasoriginally at 72degc what is the final temperature
an aluminum cup contains 225 g ofwater and a 40 g copper stirrer all at 27degc a 480 g sample of silver at an initial
white light is incident on a soap film n130 in air the reflected light looks bluish because the red light lambda 670 nm
when the tungsten filament in a 60 w 120 v light bulb reaches 2010degrees c 60 w of electric power is used to produce
light of wavelength 480nm falls normally onfour slits each slit is 2mum wide and isseperated from the next slit by
there is a potential difference of 16v between the ends of a 19cmlong graphite rod that has a cross sectional area
a football player kicks a ball at angle of theta 45degree above the horizotal the initial speed of the ball in22msec
you have 34 tuning forks that oscillate at close but different frequencies what are the a maximumand b minimum number
fresh water flows through a horizontal tube of diameter 296 cm that is joined to a second horizontal tube of diameter
the drawing shows three objects they are connected by stringsthat pass over massless and friction-free pulleys the
the speed of sound in air is around345 ms a tuning fork vibrates at 610 hz above the open end of thesound resonance
an object is placed 13 cm in front of a concave mirror whose focallength is 17 cm the object is 37 cm tall determinea
a a cylindrical container with a cross-sectional areaof 652 cm2 holds a fluid of density 802kgm3 at the bottom of the
in an experiment designed to measure the speed of light a laser isaimed at a mirror that is 590 km due north a detector
a 12 h inductor carries a steadycurrent of 10 a at what rate must the current be changed to produce a 50v emf in the
which would have a higher kinetic energy an airplane travellingat the speed of sound or an airplane with half the
a circular coil has a 200 cmradius and consists of 300 closelywound turns of wire an externally produced magnetic field
if the frequency of oscillation of the wave emitted by an fm radio stationis 936 mhz determine the waves period of
calculate the ph of a buffer solution that contains 025 m benzoic acid c6h5co2h and 015 m sodium benzoate c6h5co2na for
instructions many peoples last phase of life may be a challenging one with the possibility of the golden years
a tuning fork with a frequency of 3200hz and a tuning fork ofunknown frequency produce beats with a frequency of 45hz
a hypodermic syringe contains a medicinewith the density of water the barrel of the syringe has across-sectional area
a swimming duck paddles the water with its feet once every 18secproducing surface waves with this period the duck is
in a miniscale distillation the top of the mercury bulb of the thermometer placed at the head of a distillation