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a swimming pool has dimensions 300 m x 100 m and a flat bottom when the pool is filled to a depth of 200 n with fresh
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you are now operating a carnot engine at 40 efficiency which exhausts heat into a heat sink at 298 k if you want to
problem - natural gas essentially pure methane is being pumped through a 1016 m id pipeline at a rate of 4100 kgs m2
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three forces 1 2 and 3 all act on an object as shown in the figure the magnitudes of the forces are f1 800 n and is
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a car travels due east with a speed of 340 kmh raindrops are falling at a constant speed vertically with respect to the
a projectile is launched at ground level with an initial speed of475 ms at an angle of 250degabove the horizontal it
a105kg object oscillates at the end of a vertical spring that has a spring constant of245104nm the effect of air
why can a single object have only kinetic energy while potential energy requires interactions among objects or systems
consider two parallel wires placed a distance of 195 cm apart the current in the first wire is 750 a and the current in
1 a parallel-plate capacitor is formed from two 29 cm -diameter electrodes spaced 30 mm apart the electric field
the capacitor in an rc circuit r 110omega c 40muf is initially unchargeda find the charge on the capacitor in the
consider the circuit shown in the figure suppose the four resistors in this circuit have the values r1 11omega r2
1 the amount of electric power used by a lamp that has a resistance of 230 ohms and is connected to a 310 volt battery
a force of 200 n is needed to push a table across a level classroom floor for a distance of 3 m how much work was done
a terrorist opens a vial of viruses in the center of a 10 x 10 m classroom allowing them to become airborne if the
how does the thermal velocity scale with the size of the molecule diffusing use the ideal gas approach to find the
how long will it take a protein of molecular weight equal to 90000 gmole to diffuse a distance of 1 um assume the
consider a pair of wave functions psi1 and psi2 that are orthonormalshow that psi3 psi1 psi2 and psi4 psi1 - psi2
what are the significant similarities and differences between work and
the bar acb shown in figs 3-33a and b is fixed at both ends and loaded by a torque t0 at point c segments ac and cb of
a bicycle and rider have a combined mass of 700 kg and are moving at 600 ms a 700 kg person is now given a ride on the
one of the fastest recorded pitches in major-league baseball thrown by tim lincecum in 2009 was clocked at 1010 mih if