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a 442 kg wagon is towed up a hill inclined at 177 with respect to the horizontal the tow rope is parallel to the
an inventive child named chris wants to reach an apple in a tree without climbing the tree sitting in a chair connected
two blocks are arranged at the ends of a mass- less string as shown in the figure the system starts from rest when the
a mass of water 15 kg is initially is at 2mpa and 30 percent quality and found in a spring-loaded piston-cylinder
a piston-cylinder contains 50 l of saturated liquid r-134a the piston is frictionless and has a mass and area resulting
a cyclist is coasting at 12ms when she starts down a 460m long slope that is 30 m high the cyclist and her bicycle have
the dipole moment of ch4 is zero yet ch3d has a finite dipole moment describe why ch3d has a dipole moment hint
a rock with mass of 10 kg is at the top of a hill and has a potential energy of 50 j how high is the hill if the rock
a certain pendulum has a potential energy of 20 j when it is at the top of its swing what is the kinetic energy when
a hydrogen discharge lamp emits light with two prominent wavelengths 486 nm blue and 656 nm red the light enters a
two particles each have a mass of 600 g one has a charge of -15 microc and the other has a charge of 15 microc they are
p2 an electron in an in nite well of width a 8 a transits from energy level n 3 to n 2 and emits a photon determine
a spherical bubble of air is introduced into a vein in the ankle the diameter o this bubble is 05mm as the bubble
a system of volume equal to 1m3 is evacuated to an ultimate pressure of 10-7 torr employing a 200literss pump for a
a 1500 kg truck rolls at 25 ms under a loading bin and receives a 3500 kg loadwhat is its new
each ball has a mass of 250 grams and a charge of 14010-6 c the balls are released from rest when they are separated by
a 30 m3 steam boiler contains a mixture of liquid water and water vapor at 700 kpa initially the vapor and liquid
suppose that a single grape d05in is covered by a layer of water 005in thick decide the maximum heat transfer to the
discuss the most significant sources of error in the experimental procedures if the temperature of ice added to the
a glass tumbler of 200 g mass and 5 cm inside diameter is full to a depth of 10 cm with tap water whose temperature is
consider a solid sphere with radius a and positive charges are uniformly distributed inside the sphere total energy is
four identical particles have the same mass m and same positive charge q if they are initially at rest at the corners
a annular disk a disk with a hole in it has an inside radius a and an outside radius b and a uniform surface charge
a thermocouple junction is a small ball of solder with diameter d071 mm the thermocouple is used to gauge the
a daredevil stunt rider is attempting to jump a stack of automobiles 35 ft high if the ramp angle is 30 degrees what is