Mộtôtôcókhốilượng1tấn, khitắtmáychuyểnđộngxuốngdốccóvậntốc khôngđổilàv=54km/h, biếtđộnghiêngcủadốclà4%.Hỏiđộngcơôt ôphảicócôngsuấtbaonhiêuđểnólênđượcd ốctrênvớicùngvậntốcv=54km/h.

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

What determines the amount of inertia an object has

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.