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a certain car requires 240x106 j of thermal energy to operate its engine while traveling a distance of 100 km gasoline
a flight attendant pulls her 700 n flights bag a distance of251 m along a level airport floor at a constant speed the
a microscope by a tube length of 200 achieves a total magnification of with a objective and a eyepiece the microscope
a lighthouse sweeps its beam of light around in a circle once every 75 s to an observer in a spaceship moving away from
a glass bottle of soda is sealed by a screw cap the absolute pressure of the carbon dioxide inside the bottle is 160
neutron stars consist only of neutrons and have unbelievably high densities a typical mass and radius for a neutron
light shines during a single slit whose width is 860 10-4 m a diffraction pattern is formed on a flat screen located 40
a cylindrical storage tank has a radius of 108 m when full to a height of 307 m it holds 15500 kg of a liquid
an inductor and a resistor are connected in series when connected to a 60 hz 90 v rms source the voltage drop across
a pendulum consists of a 320-rm g solid ball150 rm cm in diameter suspended with an essentially mass less string 600 rm
a 30cm object is placed 80cm in front of a mirror the virtual image is 40cm further from the mirror when the mirror is
the threshold of dark-adapted isotopic vision is 60 multiplied by10-11nbspwm2 at a central wavelength of 450 nm if
an early main objection to the idea that earth is spinning on its axis was that earth would turn so fast at the equator
it has recently become possible to weigh dna molecules with measuring the influence of their mass on a nano-oscillator
if the shear stress in steel exceeds about 400 108 nm2 the steel rupturesa decide the shearing force necessary to shear
a satellite operates at an altitude of 20200 km and utilizes communication frequencies of157542 mhz find the
a potters wheel having a radius 045m and a moment of inertia 102kgmiddotm2 is rotating freely at 55 revmin the potter
the figure below shows four isotropic point sources of sound that are uniformly spaced on an x axis the sources emit
a lamp r 152 omega an electric heaterr 26 omega and a fan r 52 omega are connected in parallel across a 120 v linea
a wagon is rolling forward on level ground friction is negligible the person sitting in the wagon is holding a rock the
when you take a bath how many kilograms of hot water 51degc should you mix with cold water 12degc so that the
an aluminium baseball bat has a length of 087 m at a temperature of 21degc when the temperature of the bat is raised
a scientist notices that an oil slick floating on water when viewed from above has many dissimilar rainbow colours
problem 1 a metal cylinder of height h 08m and cross-section s 002m2 is floating upright in water the density of the
the equation given for klost simplifies to mmm if i am not mistaken this solution also gives 2 dissimilar values for v