Electron microscopes can form images of extremely small objects because the electrons used in them typically have wavelengths about 100,000 times smaller than visible light (on the order of 10-12 m). Show that the electron in

(a) would be useful in an electron microscope by finding its de Broglie wavelength.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature