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in lab you find that a 1-kg rocksuspended above water wights 10 n when the rock issuspended beneath the surface of the
resistors are assigned a power rating if the power rating isexceeded significantly the resistor will overheat and
a childs sled has rails that slide with little friction across the snow logan has an old wooden sled with heavy iron
two bricks are adjacent and a third brick is positioned symetrically above them where is the center of mass of the
a gas with initial conditions pvti expands isothermally until the final volume1986 times the initial volume what is the
a block of mass 20 kg rests on a horizontal surface the coefficient of static friction between the block and the
which statements about a neutral atom are correct check all that apply1 a neutral atom is composed of bothpositively
a hiker moves from base camp a distance of 1250 m due east then another 845 m in a direction 600 degrees north of east
two identical containers are filled to equal depths one is filled with corn syrup n148 the other with ethyl alcohol
a 5-kilogram ball intially rests at the edge of a 2-meter-long12-meter-high frictionless table as shown above a hard
a 1200-kg truck moving at 20ms to the right collides with a 1000-kg car moving at 25 ms to the left immediately after
a small conductive rod of length 15 m moves with a constant velocity v15 ms in a direction parallel to a long wire
because earths rotation is gradually slowing the length of each day increases the day at the end of 10 century is 10 ms
two trains on separate tracks move toward each other train 1 has a speed of 141 kmh train 2 a speed of 750 kmh train 2
a 1 x 10-6 f capacitor is connected to an emf that is increasing uniforrmly with time at a rate of 100 vs the
two stationary positive point charges charge 1 of magnitude 400 nc and charge 2 of magnitude 175 nc are separated by a
to some extent the brilliance of diamonds is attributal to total internal reflection calculate the critical angle for a
an electron gun in an old television picture tube is a device that uses an electric field to accelerate electronsnbsp
light having a free space wavelength of o 500 nm passes from vacuum into diamond nd 24 under ordinary circumstances
an ideal gas is enclosed in a cylinder with a movable piston on topof it the piston has a mass of 8000 g and an area of
a certain double-pane window consists of two glass sheet each 80 cm x 80 cm x 030 cm separated by a 030 cm stagnant air
ice has formed on a shallow pond and a steady state has been reached with the air above the ice at -35degc and the
a speeding motorist zooms through at 75kmh without noticing a police car by the roadside the police car immediately
a motorist drivesnorth for 350 min at 850 kmh and then stops for 150 min hethen continues northtraveling 130 km in 200
find the electric field energy density and the energy content for a spherical capacitor of radii r1 and r2 where they