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angular velocity of the telescope as it orbits round the sun


A "light-year" is the distance light (speed = 2.998 108 m/s)travels in one year.

(a) How many meters are there in 4.00 light-years? m

(b) An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 108 km. How many AU are there in 4.00light-year? AU

(c) What is the speed of light in AU/h? AU/h


Determine the angular velocity ω of the telescope as it orbits around the Sun.


If the refractive index of the two media are 1.2 and 1.5. What is the distance between the object and the image given the radius of curvature of 2cm

The change in direction between the incident ray and the emergent ray is know as



The orbital period of Planet A is 16 years and its average distance to Star B is 5.25 a.u. Another planet called Planet C has an average distance of 10.3 a.u. from Star B, using Kepler’s Third Law of Planetary Motion, compute the orbital period of Planet C to Star B in days



The orbital period of Planet A is 16 years and its average distance to Star B is 5.25 a.u. Another planet called Planet C has an average distance of 10.3 a.u. from Star B, using Kepler’s Third Law of Planetary Motion, compute the orbital period of Planet C to Star B in days

What is the buoyant force of a small can with a volume of 0.00005 m3 when completely submerged in water?


state keplers laws of planetraymotion


Explain what infrared radiation is and answer the following questions: How is infrared radiation different from visible light? Why does the JWST observe infrared light, and what are the scientificadvantages for astronomers?


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