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a cylinder contains 250 g of helium at 200 k the external pressure is constant at 1 atm there is an increase in
an asteroid is discovered in a nearly circular orbit around the sun with an orbital radius that is 275 times earths
in a coffee-cup calorimeter 1 mol koh and 1 mol hbr initially at 235 oc celsius are mixed in 100g of water to yield the
a 324 g sample of lauric acid c12h24o2 a common constituent of fats is burned in a bomb calorimeter the temperature of
on a hot summer day 30 degrees celsius a pesky little mosquito produced its warning sound near your ear the sound is
a uniform disk of mass m 16 kg and radius r 018 m rotates counterclockwise at a constant rate of 36 revs about its
a loop of wire in the shape of a rectangle of width 8 cm and length 90 cm and a long straight wire carrying acurrent i
a constant uniform magnetic field directed into this sheet exists in the region to the right of the y axis b0 to the
three moles of an ideal monatomic gas expands at a constant pressure of 290atm the volume of the gas changes from
a solid uniform sphere of mass 20 kg and radius 17 m rolls without slipping down an inclined plane of height 17 m what
a horizontal disk with a moment of inertia of 10 kg square meters relative to a vertical frictionless axis through its
a device consisting of four heavy balls connected by low mass rods is free to rotate about an axle it is initially not
one end of a 33cm long aluminum rod with a diameter of 28 is kept at 420c and the other is immersed in the water at
a physics lecture room has a volume of 254 m3a for a gas pressure of 100 atm and a temperature of 270 oc use the ideal
the average speed of the atoms in a 39 g sample of helium gas is 607 ms estimate the thermal energy of the
a 1000g sample of nickel is heated to 1000 oc celsius and is placed in a coffee cup calorimeter containing 150 g of
a police car is moving at 38msec to catchup with a speeder directly ahead the speed limit is 291 msec police car
a 065 g sample of fructose mw 180 gmol is burned in a bomb calorimeter that has a heat capacity of 269 kjoc the
the box of a well-known breakfast cereal states that one ounce of the cereal contains 99 calories 1 food calorie 4186
how would i do this a lactic acidlactate ion buffer solution contains 22 m hc3h5o3 and 80 m c3h5o3- respectively the
a converging lensf14 cm is located 8 cm to the left of a diverging lens f2 -2 cm an object is placed 6 cm to the left
what is the ph of a 03656 m solution of the sodium salt of a weak acid with a pka of 3745 the answer is not ph pka