Physics, 23.10.2019 18:00 saintsfan2004
In a european country a bathroom scale displays its reading in kilograms. when a man stands on this scale, it reads 98.9 kg. when he pulls down on a chin-up bar installed over the scale, the reading decreases to 82.2 kg. what is the magnitude of the force he exerts on the chin-up bar?
Answers: 3
Physics, 22.06.2019 13:40
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
Physics, 22.06.2019 14:40
You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.
Answers: 2
Physics, 22.06.2019 15:00
Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current
Answers: 1
In a european country a bathroom scale displays its reading in kilograms. when a man stands on this...
Chemistry, 10.06.2020 23:57
English, 10.06.2020 23:57
Mathematics, 10.06.2020 23:57
Mathematics, 10.06.2020 23:57
Mathematics, 10.06.2020 23:57
Biology, 10.06.2020 23:57
Mathematics, 10.06.2020 23:57
Mathematics, 10.06.2020 23:57
Mathematics, 10.06.2020 23:57