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before throwing a 0905kg discus an athlete rotates it along acircular path of radius 115m the maximum speed of the
a ray of light has an angle of incidence of 340 deg on a block of quartz and an angle ofrefraction of 175deg what is
the potential in a region between x 0 andx 600 m is v a bx wherea 150 v and b -500 vma determine the potential at
a uniform electric field of magnitude 230 vm is directed in the positive xdirection a 150 microc charge moves from the
a how much charge can be placed on a capacitor with air between the plates before it breaks down if the area ofeach of
1 a satellite is placed in orbit 860105 m above the surface of the planet jupiter jupiter has a mass of 190 multiplied
the national aeronautics and space administration nasa studies the physiological effects of large accelerations on
a small circular hole 600 mm in diameter is cut in the sideof a large water tank 140 m below the water level in the
a boat whose speed in still water is 170ms must cross a260-m-wide river and arrive at a point 110 m upstream from where
a shotputter throws the shot with an initial spped of 155msat 340degree angle to the horizontal calculate the
an automobile fuel tank is filled to the brim with 514 liters137 gallon of gasoline at 120oc immediatelyafterward the
a hollow cubical box is 030m on an edge this box is floatingin a lake with one-third of its height beneath the surface
the length of each edge of an aluminum cube is 0068 m thecube is heated to 152degc from 25degc what is the increase in
two identical mandolin strings under 200 n of tension aresounding tones with frequencies of 523 hz the peg of onestring
an antifreeze solution is made by mixing ethylene glycolp1116 kgm3 with water suppose the specific gravityof such a
an energy of 39 joules is stored in a metal sphere if a sparkcarrying 3 x 10-4 c discharges the metal sphere find the
a heat pump removes 2000 j ofheat from the outdoors and delivers 3160 j of heat to the inside of a housea how much work
five thousand joules of heat is put into a carnot engine whosehot and cold reservoirs have temperatures of 540 and 200
a carnot refrigerator is used in a kitchen in which thetemperature is kept at 304 k this refrigerator uses 214 j of
a cylindrical brass rod cross-sectional area 13 x10-5 m2 hangs vertically straight down froma ceiling when an 860-n
a cylinder with a moveable piston holds 271 mol ofargon at a constant temperature of 307 k as the gas is
a train at rest emits a sound at a frequency of 1000 hz anobserver in a car travels away from the sound source at a
a 30 kg block of aluminum isheated from 20degc to 90degc at atmospheric pressurea find the work done by the aluminumjb
an automobile having a mass of 1000 kg is driven into a brickwall in a safety test the bumper behaves like a spring
the isotope lithium-7 has a mass of 70160 atomic mass units andthe isotope lithium-6 has a mass of 60151 atomic mass