A spacecraft with a proper length of 250 m passes by an
A spacecraft with a proper length of 250 m passes by an observer on the Earth. According to this observer, it takes 0.780 µs for the spacecraft to pass a fixed point. Determine the speed of the spacecraft as measured by the Earth-based observer. c
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an air duct in a building has a radius of 8 cm and a length of 17 m what pressure is required to push air through the
a massless spring of constant k 1000 nm is fixed on the right side of a level track a block of mass m 150 kg is
an accelerating voltage of 252 x 103 v is applied to an electron gun producing a beam of electrons originally traveling
a gas sample is connected to a closed end manometer the difference in mercury levels in the two arms is 115mm what is
a spacecraft with a proper length of 250 m passes by an observer on the earth according to this observer it takes 0780
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question 1 a pulley 150 mm diameter is driven directly by an electric motor at 250 revs min-1 a v-belt is used to
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the rest energy of an electron is 0511 mev the rest energy of a proton is 938 mev assume both particles have kinetic
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