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water rises in a capillary tube to a height of 8cm water hasa surface tension of 73 dynescmand a contact angle of 20
a car proceeding due south at 60 kmh v1 makes a right turnafter which it is traveling due west at 80 kmh v2 what is its
suppose that the central diffraction envelope of a double-slit diffraction pattern contains 21 bright fringes and the
a mixture of 150 g of ice and 300 g of water is at 0 degressc how many joules f heat energy must be transferred to
you want to design a cyclotron whose maximum magnetic field is10t and maximum radius is 05ma determine the kinetic
after holding the piston for a short while you let it gowhat happens to the piston is work done on or by the gas
a monatomic ideal gas expands from point a to point b along the path shown in the drawinga determine thework done by
suppose a monatomic ideal gas is contained within a verticalcylinder that is fitted with a movable piston the piston
a 25 kg child on a swing 2m long is released from rest whenthe swing supports make an angle of 30 degrees with
suppose a 1-kg parcel of dry air is rising at a constant verticalvelocity if the parcel is being heated by radiation at
the morning sounding shows an is othermal layer from 800 to 700 mbat -11oc and the temperature in the layer from 390
erin is late tp physics class and is coming down the hall as the bells are ringing there are two bells in the hall one
a window washer is standing on a scaffold supported by a vertical rope at each end the scaffold weighs 200n and is 321
a water heater is operated by solar power if the solarcollector has an area of 600 m2 and the intensitydelivered by
a spherical surfacecompletely surrounds a collection of charges find the electricflux through the surface if the
a helicopter flies over the arctic ice pack at a constant altitudetowing an airborne 102-kg laser sensor which measures
a 168-kg sled is being pulled across a horizontal surface at a constant velocity the pulling force has a magnitude of
a potential difference of 75 mv exists between theinner and outer surfaces of a cell membrane the inner surface
a 300-microf and a 500-microf capacitor are connected inseries across a 300-v battery a 1000microf capacitor is then
a 45-m length of wire is stretched horizontally between twovertical posts the wire carries a current of 76 a and
a pitcher throws a ball to the catcher at a speed of 100 mih45 ms if the velocity of the ball is horizontal when
when a 58-g tennis ball is served it accelerates from rest to aspeed of 44 ms the impact with theracket gives the ball
nbspa 750 kg mass sits on an inclined plane and a rope passing over a pulley at the top connects it to a hanging 125 kg
when a fish looks up at an angle of 45 degrees with the horizon does it see the sky or the reflection of the bottom
the electric potential at aposition located a distance of 216 mm from a positive point charge of 870times10-9c and 151