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a 150 g copper bowl contains 220 g of water both at 200 degrees celsius avery hot 300 g of copper cylinder is dropped
a molecule of dna deoxyribonucleic acid lies along a straight line it is 1472 microm long the ends of the molecule
common transparent tape becomes charged when pulled from a dispenser if one piece is placed above another the repulsive
there is a uniform charge distribution of lambda 4699middot10ndash8 cm along a thin wire of length l 1801 cm the wire
805-n man stands in the middle of a frozen pond of radius 90 m he is unable to obtain to the other side because of a
in a physics lab a cube slides down a frictionless incline as shown in the figure and elastically strikes another cube
a studentrsquos car stalls right in front of a speed bump while she is on her way to physics class to pull it over the
two flat mirrors meet at angle theta an incoming ray reflects off of both mirrors before emerging from the mirror-pair
two moles of helium are initially at a temperature of 240c and occupy a volume of 270times102m3 the helium first
an ideal gas with 14 occupies 55l at 300 k and 120kpa pressure and is compressed adiabatically until its volume is 20 l
two moles of helium are initially at a temperature of 300c and occupy a volume of 320times102m3 the helium first
a spherical boulder with a volume of 1800 m3 and a density of 27 x 10nbsp 3 kg m3 starts to roll down a 30 degree
what is the longest wavelength that can be observed in the third order for a transmission grating having 9500slitscm
a camera utilized for aerial surveillance has a lens with a 30-cm maximum aperture and a 42-cm focal length suppose
after some time elapses the alligators body temperature reaches a constant level the rate of absorption is still 230 w
some gold medals are to be made from 750 g of solid gold at 24degc fig 146 how much heat is needed to melt the gold so
a storage cylinder of 330 l of helium gas is at 21degc and is subjected to a pressure of 100 atm how much energy should
you have tuning forks for frequencies of 294 hz and 300hz a what beat frequency is heard when you play both forks at
if the water temperature in the insulated container is found to have increased 20degc after 200 descents of the falling
is the total translational kinetic energy of the molecules in the ball higher lower or the same as when the ball was at
if a rubber ball of mass 10 kg is dropped from a height of 20 m and rebounds on the first bounce to 075 of the height
a string of length l is clamped at both ends when it is plucked it oscillates by a wavelength that is 2l3 consider the
light of wavelength 687 nm is incident on a single slit 075 mm wide at what distance from the slit must a screen be
1 an object placed 20 cm from a concave mirror forms an image that is three times as large as the object on a screen
a single slit that is 2600 nm wide forms a diffraction pattern when illuminated with monochromatic light of 420-nm