Calculate and plot the image size vs star observed at zenith with a) d 3.5m telescope at a site with ro 15cm b) d-20cm telescope at a site with ro=10cm c) d-30m telescope at a site with ro 10cm and a perfect a0 system d) d 6.5m telescope in space plot the image size (diameter, or fwhm) in arcseconds, wavelength (over 300nm-900nm) for a logarithmic scale.

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Which bonds are found inside a water molecule