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a potential difference of 20 v is applied across a wire of cross sectional area 25 mm2 the current which passes through
when a potential difference of 166 v is applied to the plates of an air-filled parallel-plate capacitor the plates
london dispersion forces are weak intermolecular forces that work to attract both polar and nonpolar molecules to one
a pair of narrow slits separated by 18 mm is illuminated by a monochromatic light source light waves arrive at the two
a father racing his son has 12 the kinetic energy of the son who has 13 the mass of the father the father speeds up by
an uncharged capacitor is connected to a 440v battery until it is fully charged after which it is disconnected from the
an electron in a hydrogen atom goes through a change in energy level from n4 to n2 calculate the wavelength of the
nanoopticsbull a perfect negative index lens is used with a single moleculehow long time will it take to form a perfect
a child launches an air powered toy rocket up into the air giving it an initial velocity of 6ms at an angle of 80degree
an ideal which and pulley system is used to haul a box of books m50kg up a ramp as shown in figure 2 the ramp makes an
two conductors having net charges of 130 microc and -130 microc have a potential difference of 130 v between thema
79 mol of helium are in a 14 l cylinder the pressure gauge on the cylinder reads 68 psi what is the average kinetic
a potential difference of 160 v is applied across a wire of cross-sectional area 401 mm2 and length 983 km the current
ball 1 with a mass of 150 g and traveling at 15 ms collides head on with ball 2 which has a mass of 350 g and is
with what minimum speed must you toss a 140 g ball straight up to hit the 14 m -high roof of the gymnasium if you
you are flying to chicago for a weekend away from the books in your last physics class you learned that the airflow
a 02kg marble is launched off the end of a table and can be considered to be in free fall the initial speed of the
a certain light-bulb has a tungsten filament it has a power of 100 w when attached to 120 v potential differencea
a ballistic pendulum consists of a bullet mb01kg fired at a small wooden block mw05kg attached to a string 25cm long
in a pet scan an electron and positron annihilate each other creating two massless photons if the positron and
as a rocket passes your space station it emits a flash of light later it emits a second flash which you determine was
betty bodycheck mb 547 kg vb 220 kmh in the positive x-direction and sally slasher ms 424 kg vs 280 kmh in the
a 54 m-long rod of constant diameter 46 mm is made of 20 m of copper and the remainder of aluminum see above if the
a huge space cruiser passes earth at speed c2 it launches a small fighter ship away from earth thank goodness at speed
a 10-kg block of ice at -5ordmc is dropped into a 55-gallon barrel of water at 80ordmf what is the final state of the