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 lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work