Physics, 26.10.2019 04:43 rbgrh8183

Arailroad freight car rolls on a track at 3.50 m/s toward two identical coupled freight cars, which are rolling in the same direction as the first, but at a speed of 1.20 m/s. the first reaches the second two and all couple together. the mass of each is 2.65 ✕ 104 kg. (a) what is the speed (in m/s) of the three coupled cars after the first couples with the other two?

Answers: 2

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 19:10, summer132

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to

Answers: 3

continue

Physics, 22.06.2019 21:00, thanitoast84

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine

Answers: 2

continue

Physics, 22.06.2019 23:40, redraider4915

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)

Answers: 1

continue

Physics, 23.06.2019 14:50, hastephens03

Which statements describe how a machine can make work easier? check all that apply. it can put out more force than the input force by decreasing the distance through which force is applied. it can increase the amount of work performed if the output force is in the same direction as the input force. it can apply a force to an object in a different direction than the force applied to the machine. it can increase the distance through which a force acts by exerting less force than was used on it. it can exert a greater force through a greater distance than the force used on the machine.

Answers: 2

continue

You know the right answer?

Arailroad freight car rolls on a track at 3.50 m/s toward two identical coupled freight cars, which...