A boy exerts a force of 225 n on a lever to raise a 125 x
A boy exerts a force of 225 N on a lever to raise a 1.25 x 10 3-N rock a distance of 13 cm. If the efficiency of the lever is 88.7%, how far did the boy move his end of the lever?
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a mass of 079 kg attached to a spring by a spring constant of 67 nm is set into simple harmonic motion what is the
1 discover the wavelength of a sound wave which has a frequency of 410 hz the speed of sound is 343 ms2 consider light
through 5 successive 097 min intervals a runner moves at the following constant speeds 0396 kmmin 0222 kmmin 0160 kmmin
a generation is about one third of a lifetime approximately how many generations have passed since the beginning of
a boy exerts a force of 225 n on a lever to raise a 125 x 10nbspnbsp 3-n rock a distance of 13 cm if the efficiency of
one way to monitor global warming is to gauge the average temperature of the ocean researchers are doing this by
in 350 s a pump delivers 0550 m3 of oil into barrels on a platform 250 m above the pump intake pipe the density of the
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a sprinter mass 75 kilogram runs the 50-meter dash in 850 s suppose that the sprinterrsquos acceleration is constant
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