A railroad car with a mass of 20000 kg rolls into a second
A railroad car with a mass of 20,000 kg rolls into a second stationary car with a mass of 40,000 kg. The cars latch together and move off with a speed of 1.2 m/s. How fast was the first car moving before the collision?
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water ripples are produced by making a cork oscillate up and down at a frequency of 5 hz the peaks of the ripples are
the solubility of ar in water at 25 c is 1610-3 m when the pressure of the ar above the solution is 1atm what is the
a patients thyroid gland is to be exposed to an average of 55 microcuries for 16 days as an ingested sample of
raindrops fall 1000 m from a cloud to the ground if they were not slowed by air resistance how fast would the drops be
a railroad car with a mass of 20000 kg rolls into a second stationary car with a mass of 40000 kg the cars latch
a 129-g mass is suspended 345 cm above a nonconducting flat plate directly above an embedded charge of q if the mass
a car is driven east for a distance of 49 km then north for 31 km and then in a direction 25deg east of north for 30 km
two small balls are given positive charges when they are a distance of 156 apart the repulsive force between them has a
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