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question tachometers are a reed-type frequency-measuring instrument consisting of small cantilever beams with weights
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question a hydrometer float shown in fig is used to measure the specific gravity of liquids the mass of the float is
question a spherical buoy 3 ft in diameter is weighted to float half out of water as shown in fig the center of gravity
a 16-kg projectile is fired from level ground the vertical component of the initial velocity is 44 ms and the
a 5 kg ball ball a traveling to the right at 4 ms collides with a 2 kg ball ball b at rest after the collision the 2 kg
a motor spins a disk idisknbsp 251 kgm2 with a torque of 40 nm and a 18 n frictional force acts on the disk at a radius
a galaxy cluster in ursa major has a recessional velocity of 15000 kms using 73 kmsmpc for hubbles constant find the
how much electrical energy is needed to heat the water in a hot water heater with a capacity of 40 gallons from 60degf
calculate the overall efficiency to produce light in a fluorescent lamp from electrical energy derived from a nearby
anbsp40-kg child runs at 8 msa calculate the childs kinetic energyb if the child could convert all of the kinetic
an antacid tablet weighing 0949 g contained calcium carbonate as the active ingredient in addition to an inert binder
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an engine takes 5 seconds to go from its idling speed of 600 revmin to 1200 revmin a what is its angular acceleration b
a vinyl record 30cm in diameter turns through an angle of 200 degrees how far does a point on the edge of the record
a power plant is designed to generate 80 mw of work 980x106nbspjs the plant is powered by steam at 765k with the
what is the efficiency of an engine that has 2200 j of heat added during combustion and loses 1000 j of heat in the