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two 30 g spheres are suspended by 90 cm long light strings a uniform electric field is applied in the x direction if
a 150-lb male athlete is running on a treadmill machine at a speed of 10 mihr in a thermally insulated room 10 after
1 an alloy is made of 30 gold 20 silver and iron the specific heats of gold silver and iron are 00308 0056 and 0107
a meterstick is hung from a string at the 25-cm mark a 050-kg object is hung from the zero end of the meterstick and
you are the operator of a 15000 v rms 60 hz electrical sub-statin when you get to work one day you see that the station
six electrons are confined to a 2-dimensional square infinite potential well with sides of length l what is the ground
one cylinder in the diesel engine of a truck has an initial volume of 600 cm3 air is admitted to the cylinder at 30 0c
a high-diver of mass 70 kg jumps off a board 10 m above the water if 2 s after entering the water his downward motion
a calculate the efficiency of a reversible engine that operates between the temperatures 6250deg c and 3450deg cb if
you walk 750 m to the east then turn 350 degrees to the north and walk another 550m determine the magnitude of your
a nuclear power plant generates 3000 mw of energy from nuclear reactions in reactors core this energy is used to boil
a kid of mass 30 kg is initially at the center of a merry-go-round which we can model as a uniform disk the mass of the
a 100kg mass is connected to a spring with a spring constant of 400 nm the displacement is given by the expression x
a horizontal segment of a pipe carrying water tapers from a cross sectional area of 50 cm2 to 500 cm2 the pressure at
a metallic sphere initially has a charge of 860 nc a negatively charged rod has a charge of -60 nc when the rod touches
a 9900 g block of wood rests on a tabletop a 100 g bullet is shot straight up through a hole in the table beneath the
when a container is filled to the brim with liquid what happens when the temperature rises you are doing a controlled
a diver has a birthmark of area 20 cm2 when the birthmark is 40 meters beneath the surface of the pool what is the
silicon at room temperature is doped with impurityconcentrations of nd 5 x 1016cm-3and na2 x 1016cm-3a what are the
a top spins at 30 revs about an axis that makes an angle of 30 deg with the vertical the mass of the top is 50 kg its
assume that if the shear stress in steel exceeds about400108nm2 the steel rupturesa determine the shearing force
a quarterback takes the ball from the line of scrimmage runs backwards for 90 yards then runs sideways parallel to the
a high diver of mass 650 kg steps off a board 100 m above the water and falls vertical to the water starting from rest
an 95 g ice cube at -10degc is put intoa thermos flask containing 200cm3 of water at 20degc byhow much has the entropy
a illustrate the cross section view of n-channel mosfetb plot the i-v curve and discuss its key parametersc what is the