The hubble space telescope orbits earth and sends images of distant objects. why does hubble form better images than the optical telescopes used on land?

it’s larger than land-based telescopes.
it uses more powerful lenses than telescopes on land.
it orbits beyond earth’s atmosphere to avoid scattering of light.
it revolves around the outer edge of earth

Asquare isothermal chip is of width w=5 mm on a side and is mounted in a substrate such that its side and back surfaces are well insulated; the front surface is exposed to the flow of a coolant at tinf=15 °c. from reliability considerations, the chip temperature must not exceed t=85 °c. if the coolant is air and the corresponding convection coefficient is h=200 w/m2 x k, what is the maximum allowable "power" of the chip? if the coolant is a liquid for which h=3000 w/m2 x k, what is the maximum allowable power of the chip?