I'm getting conflicting information on about this question. It's either fly-by or GPS satellites... What constitute the most common way that images of space are captured?

A. Fly-by missions

B. Drones landing on planets

C. GPS satellites in Earth's orbit

D. Astronauts visiting the
international space center

Which of the following is not am example of a polymer? protein nylon kevlar concreta

What is the major limitation to the light microscope?

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.