Exam (elaborations)
PHSC 121 Exam Edition. Questions & Correct Answers. Graded A+
- Course
- Institution
PHSC 121 Exam Edition. Questions & Correct Answers. Graded A+
[Show more]
Seller
Follow
wilfredmburuUS
Content preview
PHSC 121 Exam 2024-2025 Edition.Questions & Correct Answers.
Graded A+
- ANSDescribe the idea of the mythical sunstone and how it required at
least basic knowledge of the motions in the heavens to use it.
-50 degrees - ANSIf you live at 40 degrees north latitude, what declination
value for stars would make them impossible to view from your northern
location?
0.5 pc - ANSA star is measured with a parallax angle of 2" (arc seconds).
How distant is the star in parsecs?
0h - ANSWhat is the right ascension of the sun in the sky on the vernal
(spring) equinox?
1. The planets are in an elliptical orbit with the sun as the one focus.
2. The planets have an equal orbit to the space they are in. The space is
equal between each planet.
3. T^2/a^3 - ANSList two of Keplers three laws of planetary motion
18h - ANSWhat is the right ascension of the stars on your meridian at
midnight on the summer solstice?
, 1x10^8 - ANSHow do you write million in scientific notation?
2 - ANSHow many tides are there per day at most locations on earth?
23.5 degrees - ANSWhat is the declination of the sun on the summer
solstice?
400.4 nm - ANSA very distant galaxy emits light at 400 nm, but is moving
away from earth at 300km/s. What wavelength is measured?
4h - ANSWhat is the right ascension of the stars on your meridian at 10pm
on the winter solstice?
5000 years - ANSHow long ago was astronomy first practiced?
700MPc - ANSAt what rate is a galaxy 10MPc from earth receding from
us? Use H=70km/s/MPc
A satellite tracking earth from two different positions in orbit - ANSDistance
of stars measured by parallax is done from
A. Dark matter - ANSWhich of the following accounts for the fact that there
is more mass and gravity in galaxies we see than can be detected in
ordinary matter (which leads to faster galactic rotation than we'd otherwise
expect)?
A. Dark matter
B. Dark energy
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller wilfredmburuUS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82215 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now