Hello grade 12's!
During Thursday's class, there were instructions given to us on the board and they were:
1. Finish the orbit lab on page 20 in your grey booklets. (It was due on Thursday at the end of class.)
2. Finish page 22 in the grey booklet.
3. Do problems 1-4 on page 160 in the green textbook. (Answers are at the back of the textbook)
4. Do problems 1-5 on page 172 in the green textbook. HAND IN ON MONDAY!

Here are the questions that were assigned from the textbook:
Questions on page 160:

1. An asteroid revolves around the sun with a mean (average) orbital radius twice that of Earth's. Predict the period of the asteroid in Earth years.
Answer: 2.8 years

2. From Table 8-1, you can calculate that, on the average, Mars is 1.52 times as far from the sun as is Earth. Predict the time required for Mars to circle the sun in Earth days.
Answer: 684 days

3. The moon has a period of 27.3 d and has a mean distance of 3.90 x 10^5 km from the centre of Earth. Find the period of an artificial satellite that is 6.70 x 10^3 km from the centre of Earth.
Answer: 88.5 minutes

4. From the data on the period and radius of revolution of the moon in Practice Problem 3, find the mean distance from Earth's centre to an artificial satellite that has a period of 1.00 d.
Answer: 4.30 x 10^4 km

Questions 1-5 on page 172 (Don't forget that these questions are for marks!)

1. Jupiter is 5.2 times farther than Earth is from the sun. Find Jupiter's orbital period in Earth years.

2. Uranus requires 84 years to circle the sun. Find Uranus' orbital radius as a multiple of Earth's orbital radius.

3.Venus has a period of revolution of 225 Earth days. Find the distance between the sun and Venus, as a multiple of Earth's orbital radius.

4. If a small planet were located 8.0 times as far from the sun as Earth, how many years would it take the planet to orbit the sun?

5. A satellite is placed in an orbit with a radius that is half the radius of the moon's orbit. Find its period in units of the period of the moon.

Enjoy!