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a balloon is filled with 545 liters of helium at a pressure of 135 atm and a temperature of 240deg ca discover the mass
a sealed glass jar contains air originally at a pressure of 100 atmand a temperature of 0deg c discover the air
in which of the following situations could total internal reflection occur choose all that applygoing from crystalline
a stargazer has an astronomical telescope by an objective whose focal length is 180cm and an eyepiece whose focal
a diverging lens f-10cm is located 200cm to the left of a converging lens f300 cm a 300cm tall object stands to the
the owner of a van installs a rear-window lens that has a focal length of -0300m when the owner looks out during the
three charges are fixed to an x y coordinate system a charge of14 microc is on the y axis aty 30 m a charge of
light of wavelength 300nm strikes a metal whose work function is 22ev what is the shortest de broglie wavelength for
a generator supplies 130 v to a transformers primary coil which has 64 turns if the secondary coil has 680 turns what
a gaussian surface in the shape of a right circular cylinder with end caps has a radius of 137 cm and a length of 105
the focal length of a thin lens is -241 cm a screen is placed 160 cm from the lens what is the y-coordinate of the
as a parallel-plate capacitor by circular plates 18 cm in diameter is being charged the current density of the
a 800 omega resistor 100 mh inductor and a 130 microf capacitor are connected in series to a 400 v rms source having
a person makes a quantity of iced tea by mixing 500g of hot tea basically water with an equal mass of ice at its
a 150g copper bowl contains 220g of water both at 20 degrees celsius a very hot 300g copper cylinder is dropped into
a rope is utilized to pull a 357 kg block at constant speed 486 m along a horizontal floor the force on the block from
through a rockslide a 770 kg rock slides from rest down a hillside that is 500 m long and 300 m high the coefficient of
a drop of water on a countertop reflects light from a flower held26 cm directly above it the flowers diameter is 20 cm
a beam of high-energy protons emerges from a cyclotron is there a magnetic field associated by these particles why or
a subatomic particle created in an experiment exists in a certain state for a time of deltat 80 x 10-20 s before
a roller-coaster car has a mass of 500kg when fully loaded by passengers the car passes over a hill of radius 15 m at
a 100 kg black is released from point a the track is frictionless except for the portion among points b and c which has
a 14-g bullet is fired horizontally into a 110-g wooden block that is originally at rest on a frictionless horizontal
a man and a box are at rest on a horizontal frictionless surface similar to an ice skating rink only less friction
a radioactive phosphorus nucleus by atomic number 15 and mass number32 beta decays by emitting an electron and an