Physics, 05.07.2019 00:30 ochoachanna
Ared train travelling at 72 km/h and a green train travelling at 144 km/h are headed toward each
other along a straight, level track. when they are 950 m apart, each engineer sees the other train
and applies the brakes, which slow each train at the rate of 1.0 m/s2. is there a collision? if yes,
give the speed of the red train and the speed of the green train at impact, respectively. if no, give the
separation between the trains when they stop.
Answers: 3
Physics, 21.06.2019 20:30, jasminelynn135owmyj1
When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false
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Physics, 22.06.2019 00:00, izearaholland7308
What type of nuclear decay causes the atomic number of an element to increase by 1?
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Physics, 22.06.2019 00:30, klocke2001
Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d
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Physics, 22.06.2019 13:40, mvongphakdy8746
Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.
Answers: 2
Ared train travelling at 72 km/h and a green train travelling at 144 km/h are headed toward each
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