A train faces an uphill ramp with constant l = 18 at the end of the lale tralto the locomotive will have overcome the difference in height h = 40, knowing the total mass, m = 288t, the maximum power of the motors p = 2000kw and the holding speed v = 23m / s, calculate the value of the metric force Fm, optimizing that the resistance devolved to others in the bearings and between the wheels and rotala is 4, 2KN and that the aerodynamic resistance is 5KN, also calculate the power necessary for the motion​

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?

Some material consisting of a collection of microscopic objects is kept at a high temperature. a photon detector capable of detecting photon energies from infrared through ultraviolet observes photons emitted with energies of 0.3 ev, 0.5 ev, 0.8 ev, 2.0ev, 2.5ev, and 2.8ev. these are the only photon energies observed. (a) draw and label a possible energy-level diagram for one of the microscopic objects, which has four bound states. on the diagram, indicate the transitions corresponding to the emitted photons. explain briefly. (b) would a spring–mass model be a good model for these microscopic objects? why or why not? (c) the material is now cooled down to a very low temperature, and the photon detector stops detecting photon emissions. next, a beam of light with a continuous range of energies from infrared through ultraviolet shines on the material, and the photon detector observes the beam of light after it passes through the material. what photon energies in this beam of light are observed to be significantly reduced in intensity (“dark absorption lines”)? explain briefly.

Hydrogen and helium are both members of?