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two identical pucks are on an air table puck a has an initial velocity of 40 ms in the positive x-direction puck b is
an apparatus that liquefies helium is in a room maintained at 306 k if the helium in the apparatus is at 40 k what is
a 78 g ice cube at -18degc is placed in a lake whose temperature is 12degc calculate the change in entropy of the
a 76-kg man is at rest on ice skates a 024-kg ball is thrown to him the ball is moving horizontally at 26 ms just
opening champagne in a bottle of champagne the pocket of gas primarily carbon dioxide between the liquid and the cork
a room with a pine ceiling measured 10 m x 6 m x 2 cm thick on a cold day the temperature on inside of the ceiling is
an ideal monatomic gas initially has a temperature of t and a pressure of p it is to expand from volume v1 to volume v2
an object of mass 50 kg is projected into the air at a 55deg angle it hits the ground 39 s later what is its change in
a spherical virus has a diameter of 50 nm it is contained in a long narrow cell of length 1 x 10-4 m what uncertainty
true or false1 sound is considered an electromagnetic wave2 the electric field in an electromagnetic wave is parallel
a parallel-plate capacitor has an area of 437 cm2 and the plates are separated by 107 mm with air between them it
a sample system consists of argon confined in a cylinder with a movable piston moving the pistion inward uses 249j 156j
in a study of ammonia production an industrial chemist discovers that the compound decomposes to its elements n2 and h2
an electron that has an energy of approximately 62 ev moves between rigid walls 14 nm aparta find the quantum number n
find the resistance of the following power ratings are based on the assumption of a potential difference of 120 v rms
the terminal voltage of a certain battery is measured with the battery disconnected and is found to be 636 v the
how much heat is liberated at constant pressure when 682ml of liquid benzene c6h6 d0874gml reacts with 542ml of 282m
investigate ohmrsquos law for reverse currents in resistors turn off the power supply and reverse the connections on
a car manufacturer claims that you can drive their new vehicle across a hill with a 47 slope before the vehicle starts
calculate deltau of a gas for a process in which the gas absorbs 18j of heat and does 6j of work by
a vw bug hits a huge truck head on each vehicle was initially going 50 mpha which vehicle experience the greater forceb
a compound contains 1013 c and 8987 cl by mass determine both the empirical formula and the molecular formula of the
a loudspeaker of mass 200 kg is suspended a distance of h 220m below the ceiling by two cables that make equal angles
vector has a magnitude of 63 units and points due west while vector b has the sasme magnitude and points due south find