Measuring the light reflected from a planet's surface and/or atmosphere allows us to determine its

A) chemical composition
B) physical size
C) temperature
D) distance


A

Physics & Space Science

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Optical telescopes are intended for the study of _______________ light

Fill in the blank(s) with correct word

Physics & Space Science

This photograph shows what appears to be four identical quasars arranged as a cross. What are we really seeing?

A) four images of a single quasar, with the images formed by gravitational lensing because a large galaxy lies between us and the quasar B) four quasars that are nearly identical because they were born at about the same time C) a picture taken with a poorly made telescope so that a single large object appeared as four fuzzy dots D) a large galaxy with four central masses that each glow brightly

Physics & Space Science

If you consider the total distance and total time for a trip, you are calculating a(an)

A. average speed B. constant speed C. instantaneous speed D. non-uniform speed

Physics & Space Science

A solid uniform sphere of mass 1.85 kg and diameter 45.0 cm spins about an axle through its center. Starting with an angular velocity of 2.40 rev/s, it stops after turning through 18.2 rev with uniform acceleration

The net torque acting on this sphere as it is slowing down is closest to A) 0.00593 N ? m. B) 0.0372 N ? m. C) 0.0466 N ? m. D) 0.0620 N ? m. E) 0.149 N ? m.

Physics & Space Science