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a total resistance of 3 ohm is to be produced by connecting an unknown resistance to a 12 ohm resistance find the value
a hand bicycle pump should compress air from atmospheric pressure to the pressure inside the tire usually 5 or 6
shareen finds that when she drives her motor boat upstream she can travel with a speed of only 8 ms while she moves
if a visible photon by wavelength 434 nm is emitted from an atom in a hydrogen gas lamp what energy state was the atom
the cheshire cat is sitting on the limb of a tree 25 meter above the ground after alice walked away from its grin it
a photon of wavelength 072462 nm strikes a free electron that is at first at rest the photon is scattered straight
a 680 ohm resistor a 300 microf capacitor and a 0400 h inductor are connected in series to an 850 volt rms 600 hz
three identical stars of mass 746 times1024 kg are located at the vertices of an equilateral triangle with side 7500 km
an inductor and a resistor are connected in series when connected to a 60 hertz 90 volt rms source the voltage drop
determine what minimum horsepower must a motor have to be able to drag a 350 kilogram block up a 15o ramp at a speed of
a 30-m-long ladder as shown in figure 1239 leans against a frictionless wall the coefficient of static friction among
the mad hatter moves a tea cup across the table by giving it a push if it is initially at rest in front of him and
when light of wavelength 360 nm falls on a lithium surface electrons having a maximum kinetic energy of 115 ev are
an applied force varies with position according to fk1xn - k2 where n3 k184 nm3 and k246 n find how much work is done
a cylindrical disk has volume 89810-3 m3 and mass 798 kg the disk is floating on the surface of some water with its
a 300 gram block is attached to a light horizontal spring the block is free to slide on a horizontal table a force of
it takes 387 joule of work to stretch a hookes-law spring 85 centimeter from its unstressed length compute how much
a person on a balcony that is 28 m off the ground leans over the railing and throws a ball straight up into the air
a submarine is 315 m horizontally out from the shore and 128 m beneath the surface of the water a laser beam is sent
if i put 40g of ice at 0degc into a perfectly insulated cup containing 250g of coffee at 90degc what will the final
two resistors when connected in series to a 110 line use one-fourth the power that is used when they are connected in
discover the minimum aperture diameter of a camera that can resolve detail on the ground the size of a person 20 m from
the height of a helicopter above the ground is given by h 310t3 where h is in meters and t is in seconds after 155
two point sources of light are separated by 45 cmas viewed through a 15 mum diameter pinhole what is the maximum
a laser beam has a power of 1 mw and a diameter of 2257 millimeter find how many photons are emitted per second over an