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two conducting spheres of radii r1 and r2 at the same electric potential v are connected to each other by a wirea what
an ideal fluid of density 085 x 103kgm3 flows at 70 ms through a level pipe with radiusof 050 cm the pressure in the
two small beads with positive charges4q andq are fixed atopposite ends of a horizontal insulating rod as shown a third
a bucket of mass 100 kg is whirled in avertical circle of radius 140 m at thelowest point of its motion the tension in
two masses m1 2kg and m2 4kg rest on frictionless surface and connected by light string a horizontal force f12n is
the atmosphere on mars is almost all carbon dioxide co2 and hasa pressure of about 69times102 pa much less than that
a 50 kg 60-cm-diameter disk rotates on an axle passingthrough one edge the axle is parallel to the floor the cylinder
a fancy sports car passes big ben at a speed of 02 c what time interval will the driver measure for a one-second
what are magnetic domains explain how they produce magnetism in ldquoferromagnetic materialsrdquo with use of a
a parallel plate capacitor with plates of area 620 cm2 is charged to a potential difference v and is then disconnected
two parallel plates of area 81 cm2 have equal but opposite charges of 320e-07 c within the dielectric material filling
on a very warm day30oc you are sitting at the shallow end of a swimmingpool teaching a young child to swim when someone
an electron accelerated from rest through a voltage of520 v enters a region of constant magnetic field if the electron
the sound intensity level07 m from a jack hammer is 130 db relative to the threshold ofhearingwhat is the
a certain source of sound waves radiated uniformly i alldirections at a distance of 15m from the source the
the figure below shows a resistor of resistance r 633 omega connected to an ideal battery of emf 140 v by means of two
a small ferryboat is 400 m wide and 600 m long when a loadedtruck pulls onto it the boat sinks an additional 490 cm
a 26 kg gun is standing on a frictionless surface the gun fires a 552 g bullet with a nmuzzle velocity of 320 ms the
a stone is dropped from the top of a cliff the splash it makeswhen striking the water below is heard 76 s laterpart a
the amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 240 js the
two long straight wires are separated by a distance of 313 cm one wire carries a current of 295 a the other carries a
a 49 kg woman leaps vertically from a crouching position in whichher center of mass is 36 cm above the ground as her
in a steam power plant 1 mw is added at 700degc in the boiler 058 mw is taken out at 40degc in the condenser and the
liquid sodium leaves a nuclear reactor at 800degc and is used as the energy source in a steam power plant the condenser
a 0165-rm kg baseball pitchedhorizontally at 400 rm ms strikes a bat and ispopped straight up to a height of 300 rm ma