Written HW7 - Eclipse Prediction and Solar Alignments

#4 please and Thankyou

Number 76

1) Thinking about the Scale of the Solar System As we discuss in class, the radius of the Earth is approximately 6370 km. The Sun, on the other hand, is approximately 700,000 km in radius and located, on average, one astronomical unit (1 au=1.5x108 km) from the Earth. Imagine that you stand near Mansueto Library, at the corner of 57th and Ellis. You hold a standard desk globe, which has a diameter of 12 inches, and you want to build a model of the Sun, Earth, and their separation that keeps all sizes and lengths in proportion to one another. a) How big would the Sun be in this scale model? Give your answer in feet and meters.

Use the table to answer questions 13 through 15. A student collects the following data about the Sun, stars, moon, and Earth. Time of Day Sun Visible Moon Visible Stars Visible 5 am Sun Location Near horizon Above horizon Overhead Yes No Yes 10 am No Yes No No 1 pm 5 pm 9 pm Yes No Near horizon No Yes No Not visible No Yes Yes O What research question is the student investigating? A. How long does it take Earth to rotate on its axis? B. Does the moon rotate at a faster rate than Earth does? C. How do the locations of the stars relate to the moon? D. What is the relationship between time of day and seeing objects in the sky?

Please give me a step by step solution for this problem.Thank you!

Electronic communication via radio travels at approximately the speed of light (186,000 miles/second). The edge of the solar system is roughly at Pluto, which is 3.6 × 109 miles from Earth at its closest approach. How many hours does it take for a radio signal from Earth to reach Pluto? A. 2.5 hrs B. 3.2 hrs C. 5.4 hrs D. 10 hrs

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I hope you answer this:) 1. Ancient civilizations observed and kept track of daily movement of heavenly bodies. Which one is NOT the reason for this? a. navigation purposes b. time keeping c. annual cultural cycles d. agricultural cycles   2. What Kepler's Law of Planetary Motion is related to the Newton's Law of Motion based from the statement below: The statement: "Since the planets move on ellipses they are continually accelerating." a. Law of Ellipses and Law of Acceleration b. Law of Ellipses and Law of Inertia c. Law of Equal Areas and Law of Interaction d. Law of Period and Law of Inertia e. Law of Period and Law of Acceleration   3. Edwi Hubble proposed a way to organize galaxies in 1920. How are galaxies classified? a. color of stars b. shape of galaxy c. age of stars d. composition of stars e. diameter of galaxy   4. Find the magnifying power (M) and the length (L) of a simple telescope with 30-inches focal length of the objective and 2 inches focal length of the eyepiece.…

Can earth be regarded as a point object when describing its yearly journey around the sun?a) Yesb) No

Astronomy help

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select the most accurate statement