An astronomer wants to observe at a particular wavelength using one of the telescopes listed. Arrange these telescopes from worst to best angular resolution based on the diffraction limit. Worst resolution to Best resolution.1. personal 8-inch telescope 2. Mayall 4-Meter Telescope at Kitt Peak National Observatory 3. 2.1-meter Otto Struve Telescope at McDonald Observatory 4. Nickel 1-meter telescope on Mt. Hamilton 5. 10.4-meter Gran Telescopio Canarias

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct