Quantitative Astronomy Guided Notes.docx

Answer you use a coefficient which you move the

• Notes
• 7
• 100% (1) 1 out of 1 people found this document helpful

This preview shows pages 3–6. Sign up to view the full content.

Answer: You use a coefficient, which you move the decimal point to the left. Then you use an exponent which is the amount of spaces you move to the right, meaning times 10. Mass of sun = 2.0 x10^30 kg Why is it so important to get the exponent correct when working in scientific notation? Answer: It is important because the difference could be huge, for example an exponent of 3 is 10 times bigger than 2 How would you enter a number like 1.5 x 10 11 into your scientific calculator? Answer: First you type in the coefficient. Look for the key EXP or EE. Then you type in the exponent What are two of the most common mistakes you can make when dealing with exponents and a scientific calculator? a. Typing in the incorrect info in the calculator b. Writing the wrong answer Positive exponents are used for really large numbers. Negative exponents are used for really small numbers.

This preview has intentionally blurred sections. Sign up to view the full version.

Test Yourself – Exponents Calculate 1 2 10 4 10 2 x x Answer: 500 Test Yourself – Sample Exponent Calculations 1. 8 x 10^-1 2. 7.2 x 10^-3 3. 4.2 x 10^13 4. 3.96 x 10^-17 5. 4.68X10^2 6. 2.84x10^-66
What is an easy way to describe what a formula is? Answer: A shorthand way of saying how one quantity relates to another The equation “D = vt” can be written in words as: Answer: The distance an object travels equals toe average velocity multiplied by the travel time The steps to doing a word problem are: And an example with calculation is: 1. Read the problem What is it asking for? What info have I been given?

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern