in class with chris d’amato for students in physics and other classes at pths

Physics Biography Project: Important files

Please email or call 973 348 9386 if you have any questions this weekend.

Link: Physics biography project 2010.pdf

• Requirements
• Due dates
• List of questions
• Grading rubric

Link: Word template for project.doc

• Use this as a basis for your written response
• This will make your life easier
• Contains instructions for use

Review notes on electric fields lessons 1,2

Today's smartboard contents, for your convenience.

Electric fields lessons 1-2 summary (pdf)

Energy exam review resources

Exam tomorrow during class. Multiple choice and free response. 60 minutes.

Suggested practice problems from the activity guide: 6.5, 7.3, 8.4, 8.5, 9.4A, 11.2

Make your own formula sheet. Anything you want, but make it yourself. Bring a calculator.

Downloads:

• Energy practice problem solutions (pdf)
• Work energy formula reference (pdf)
• 2010 Work and energy activity guide, with summary (pdf)

Homework due Wednesday March 3

Period 3 and 4 SENIORS only: Make a scale model of the Earth and Moon.

Look up the real sizes of these two objects. Look up the real distance between them.

Draw a measured circle on a standard piece of paper which represents the size of the Earth. Draw another circle which represents the size of the moon, accurately scaled to match the size of the Earth your drew. Then determine how far apart the two objects should be at that scale. (Tip: radius and diameter are not the same thing.)

Requirements:

1. The sizes of the moon and the Earth are correct, relative to each other, and labelled
2. The distance between the moon and the Earth is correct, at the scale you have drawn
3. Your calculations are shown
4. Earth and moon are drawn carefully and their sizes match your calculations

Options:

• If you make something attractive I may award bonus points and leave it on the classroom wall forever
• Juniors and students in period 5 MAY complete this activity to improve their average. Your grade will not decrease.
• You can do the same for the Sun and the Earth if you prefer

Urgent: Week of March 1

The snow days have caused our Energy exam to conflict with the standardized HSPA exams which juniors are taking this week. I'm afraid this means we will have to change our schedule yet again.

Monday (today)

• Energy review during classes
• Office hours until 4pm
• Pizza review rescheduled to Thursday

Tuesday

• Office hours from 7am
• Energy exam rescheduled to Friday
• Juniors are taking HSPA test
• Lesson 1 of supplementary unit
• Office hours until 4pm

Wednesday

• Office hours from 7am and until 3:30pm
• Juniors are taking HSPA test
• Quiz on lesson 1 of supplementary unit (juniors are excused)
• Lesson 2 of supplementary unit
• Office hours until 4pm

Thursday

• Office hours from 7am
• Juniors are taking HSPA test
• Lesson 3 of supplementary unit
• Quiz on lesson 2-3 of supplementary unit (juniors are excused)
• Pizza review for Energy after school

Friday

• Office hours from 7am
• Energy exam during class for all students

Lesson 9 summary and homework assignment

When a system object is displaced over a distance s and the surface (in the system) exerts a frictional force F_SF there is an increase in the system's internal energy equal to F_SF s

And remember:

And remember, in situations where

then

so

and

Derivation (for fun and exercise): Energy 09.3 Derive.pdf

Review of frictional forces (essential): Energy 09 Friction forces summary.pdf

Solution to problem 9.3 (check your work): Energy 09.3 Solution.pdf

Homework (do at home): Problem 9.6 from the Energy Activity Guide Energy Activity Guide

Quiz: Tomorrow, in class, no notes, very similar to problem 9.6

Lesson 8 Lab

If you were unable to finish your measurements and testing in the two class periods provided, you can come during office hours at 7am on Friday to finish.

The requirements of your lab are described in activity 8.3 of your activity packet, and the grading and submission requirements are described in this document:

For period 3 only: This lab is due Friday during class. If not submitted on time, the activity will be late and subject to late grading.

For period 4 and 5 only: This lab is due before second period on Monday 22 Feb. If not submitted by this time, the activity will be late and subject to late grading.

Lesson plan: Thursday 11 Feb

Classes will work individually and at tables under the supervision of the substitute teacher. An assignment will be submitted for a  grade.

1. Collect all your personal papers from the return box for your period (File your old papers or throw them out if you want, but please don't leave them around the classroom.)
2. Review your homework assignment together, problems 7.3, 7.4, and 7.5. Work together with your class or your table.
3. Submit your work on ONE of these three problems to the substitute teacher. Write your name and student code clearly on your pages please.
4. You will receive a grade based on the achievement and effort that your paper shows. Include sketches, charts, math, writing, and anything else that shows your reasoning.

You can use this website for reference (spring potential energy is summarized in a previous post).

Energy quiz 6 results

You can find your work in the attachment and see your grade on your grade page (link in your email.)

Homework for 2/9

Resources (all periods):

First, an excellent solution to today's quiz question, by Annie:

A summary of the mathematical definition of elastic potential energy, and a helpful picture of what the "displacement from rest" means:

And here's the helpful "cheat sheet" we have created so far:

Assignment (all periods)

Problems 7.3, 7.4, and 7.5.

A quiz based on problem 7.3 will start the next class.