As a result of his observations, Roemer concluded that eclipses of lo by Jupiter were delayed by 25.2min during a 6 months period as the Earth moved from the point its orbit where it is closest to Jupiter to the diametrically opposite point where it is farthest from Jupiter. Using R= 147.0x106 km as the average radius of the Earth's orbit around the Sun, calculate the speed of light from these data. State your result in km/s to the nearest km/s

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1, What is the diameter, in meters, of the earth's orbit around the sun? Written in scientific notation, the diameter is________ times 10 to the power of_____ meters. 2, According to Roemer, about how many seconds does it take light to travel across the diameter of the earth's orbit? Do NOT include units of measure. 3, How do these two quantities determine the speed of light? 4, When ultraviolet light shines on glass, what does it do to electrons in the glass structure? 5, When energetic electrons in the glass structure vibrate against neighboring atoms, what happens to the energy of vibration? 6, What happens to the energy of a vibrating electron that does not collide with neighboring atoms? 7, How is the speed of light in glass affected by the succession of time delays that accompany the absorption and re-emission of light from atom to atom in the glass? 8, When looking at a shadow, the_________  is darker than the __________ 10, How does the speed of light compare in water,…

The intensity of the light emitted by our sun peaks at about 550 nm. The frequency of this light is equal to 5.45x10^____. (Give the exponent.)

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Given the location of Springfield, IL is 40N and 90W, answer the following questions.  You must explain your answer to each question When Springfield’s day light time is about 9 hours, what is the Sun-angle in Springfield?  Use your calculation to explain your answer

3.85 3.90- 3.95 4.00- Choose the three answers below which are the best answers for the following questions: 4.05 4.10 4.15 0.4 0.5 0.6 0.7 0.8 0.9 0.0 0.1 0.2 0.3 Phase The light curve for a variable star is shown in the figure to the right. a) Identify the type of variable star and explain your criteria for classifying it as such, b) estimate the depth of the primary (deeper) eclipse, and c) describe what you can conclude about the period of the variable from looking at the light curve. O None of the magnitudes listed equals the value of the magnitude of the light curve. O This is an intrinsic variable star since it actually pulsates - the radus rhythmically expands and shrinks - much like breathing. O The period is long compared to the other variable stars. O This is an extrinsic vaiable system. A pair of gravitationally bound stars eclipsing each other. O The depth of the primary eclipse is about 0.315 magnitudes O The period is twice the time between the primary and secondary…

What diameter telescope is needed to see the separation between Uranus and its largest moon, Titania, from Earth at 550 nm, when Earth is 19.7 AU away? The moon is 436,300 km from the center of the planet. (Enter your answer in m.) m