review problems for second force unit

reviewproblems key2010

Hints on current homework

In the question about the car stopping: Vf=Om/s. You can use vf^2=vi^2+2aΔx to get x, the stopping distance. To get a use the frictional force Ff = µFN. You’ll have to decide which µ works better.

For the box on the slope: amazingly you can do it even though you don’t know the mass of the box. The mass will cancel out everywhere. Start with ma = Fnet = Fparallel-Ff. (FN = Fperp.) If you substitute in correctly, you can get mass to cancel.

Sorry about the lack of subscripts and superscripts here. Did you see the extra credit assignment.

Unit 4: Advanced Forces

Unit 4: Advanced Concepts in Forces – friction, components, centripetal force, circular motion and gravity Nov. 15 – Dec. 17

Goals
• Be able to add forces in two dimensions.
• Understand and apply conditions for equilibrium.
• Calculate the frictional force when given the coefficient of friction and vice versa.
• Determine the normal force, and the parallel and perpendicular components of gravity for inclined plane problems and solve for acceleration.
• State and apply equations for centripetal acceleration and force.
• Distinguish between the centripetal force and the fictitious centrifugal force.
• Analyze examples of circular motion in terms of Newton's three laws of motion.
• State and apply Newton's universal law of gravity.

Important Dates
Friction Lab : due Nov. 29
Moons of Jupiter minilab: Dec. 16
Homework: Dec. 2 and Dec. 13, both at 10:00 pm
Unit Test: Dec. 17

Forces Review Answer Key

Forces Review Answer Key

Unit 3- Dynamics

Unit Three – Dynamics
Goals
1. Draw Force Vectors.
2. Calculate Weight.
3. Solve Problems with Net Force.
4. Know that when an object is at rest or moving with constant velocity that Fnet = 0 and all of the forces are balanced.
5. Understand what terminal velocity is and how it is reached.
6. Be able to explain why all objects in freefall have an acceleration of 9.8 m/s2
7. Understand that forces are interactions between two things and that each object exerts an equal and opposite force on the other.
8. Know Newton’s Three Laws of Motion by name.
In general, understand Newton’s 3 laws and apply them to explain motion.

Test Date: Nov. 10
Lab Due Date: Nov. 2 Drafts of sections due at earlier dates. See lab handout.
Homework due in the evening of Nov. 8

Review Packet for our Vectors Unit.

Motion in 2 Dimensions Practice

Vector Unit Overview

Unit Two – Vectors and Kinematics in Two Dimensions

Covers Sections 4.1, 4,2 and 7,2

Unit Goals:
1. Know that perpendicular vectors are independent
2. Add vectors graphically with parallelogram and head to tail methods.
3. Use trig and Pythagorean theorem to find resultant.
4. Break vectors into perpendicular components graphically and with trig.
5. Solve motion problems in 2D.

Test - Tuesday Oct, 19

Homework due 10:00 pm Sunday the 17th.

solution set for review promlems

Review Problems Solution Set 2010

Checking Grades

Here is a link to the Parent Assist website.

Many Grant teachers will use this district provided program to maintain and post their grades. You will also be able to monitor attendance and check personal information. I will update grades after every major test and lab, but I might not get every late assignment or retake in the gradebook promptly.
To use this website you will need to get a personal code from the Grant High School office. If you have a code from last year or for any other child it should still be active.

Installing Logger Pro on your Home Computer

As a Grant High School student, you have access rights to our site license for Logger Pro. When you graduate, you should uninstall this program.

To download it to your home computer requires several steps:

1. Go to the PPS Virtual Office Webpage, which allows you to access your student X drive remotely.
https://files.pps.k12.or.us/vo/servlet/portal?render=on

Use your PPS log in: initials and student ID.
(This link is also on the Grant Web Page, a handy feature for transferring files to school.)

2. Download the Logger Pro installer.

To get to the installer first choose the NETSTORAGE icon on the right. Then Choose DriveX@Dept, followed by Student Files, and finally Logger Pro 3. It's a big file. You might not want to try this if you're still using dial-up.

3. "Unzip" the installer. The file is large and compressed. Your computer may do this automatically, or you may need to download a program to do this. Here is a link to a free utility to do this. http://www.7-zip.org/

Once the folder is open, you want the SETUP application - not the setup bitmap, or document, etc.

Good Luck with this let me know if it doesn't work.

Sample Lab Report

Sample Lab Report 2010

Making an Online Homework Account

Please go to this link and start an online homework account. Click on "get started" and then choose "I need a UT EID". In the next window choose "get a UT EID". After you submit your information it will send your ID code to your email account. With this code you will will sign in to my class and start the first assignment. You may proceed to sign in now or bring your EID code and password on Wednesday. On next Monday we will log in as a class, I will start accepting your enrollment and we will start the first assignment.

This is how to sign in:
Return to the link above and log in.
You will then need to select a class based on a unique number. For Physics the unique number depends on your period. For per 4: 2234, for per 5: 2235, for period 6: 2236. . Enter the number 223... and then select look up course info. Scroll down by clicking the arrow on the window that appears through the many other classes designated with that unique number until you find Physics (Grant High school 2010 Fall). It will probably be one of the last ones. Select it and then select request enrollment.

I will have to admit you into the class. The next time you log in, after I admit you, you will be able to use the "select course" and "select assignent" windows to start the Kinematics homework.

Unit one goals and schedule

Unit 1: Kinematics in 1 Dimension

Goals:
1. Know and apply the definition for average velocity.
2. Know and apply the definition for average acceleration.
3. Differentiate instantaneous and average velocity.
4. Interpret graphs of position, velocity and acceleration, including through the use of slopes and the area under the graph.
5. Draw position, velocity and acceleration graphs for described motion.
6. Know the acceleration due to gravity.
7. Solve problems by using 5 basic mechanics equations.
8. Properly use sign conventions for positive and negative acceleration and velocity.
9. Describe sources of error as either random or systematic and suggest basic ways of reducing error such as controlling variables, doing multiple trials, collecting data over a wide range and using big sample sizes.

Homework: Due Date

Letter to Teacher & Safety Contract Wed, 9/9

Lab 1 data presentation Tues, 9/14

Lab 1 report Mon, 9/20

First Quest hmwk assignment Tues. 9/28

Solving Problems in Phys(wksht) &

Review packet (not graded) Thurs. 9/30

Unit Test : Fri. 10/1

General Physics Class Information

The 2010-2011 school year has started. Welcome to Physics.

Here is some general information about how the class runs.

Grades:
Approximately 50% Tests, 30% Labs, 20% homework

Tests: About twice a quarter, with semester finals also. Retakes are available, but only half the missed points are recoverable.

Labs: Although we’ll have weekly hands-on lab assignments, I’ll only have you write up formal lab reports about twice a quarter. (The first one will be due Sept. 21.) Late labs are penalized at 10% a week.

Homework: Most homework will be submitted online through the web site https://quest.cns.utexas.edu/ It will be graded for accuracy, but on a generous scale because I recognize that homework is practice and created to find mistakes. Students who have difficulty getting internet access should talk with me. Accommodations will be found. No late homework accepted except for excused absences.

Grading Scale: 100-90 A, 90-80 B, 80-70 C, 70-60 D, <60 F.

Supplies:
Textbook
Notebook, or section of a notebook
Calculator
Protractor
Graph Paper

review sheets

There are two of them.

2nd Semester Review Question


2nd Semester Review Questions Part 2

Physics - Second Semester Goals

Static Electricity (Ch. 20, 21)

Describe what it means for an object to be charged or neutral.
Describe three methods of charging.
State coulombs law and use it to describe the size and direction of electrical forces.
Sketch the electric field lines around point charges, dipoles and plates.
Sketch equipotential lines around point charges, dipoles and plates.
Qualitatively describe electric field strength, electric potential energy and voltage/potential and distinguish between them.
Solve problems with Coulomb’s law and the equations for electric field strength, potential energy and voltage.
Qualitatively explain electrical phenomena like lightning, static cling, shocks, grounding.
Describe the charge of an electron and how it was determined.

Current Electricity (Ch. 22-23)
Know meanings of potential difference (voltage), current, resistance, power. Be able to use appropriate relationships between them with correct abbreviations and units.
Properly use the terms series, parallel and circuit.
Draw and decipher circuit diagrams.
Determine current, resistance, potential difference and power output for any part of a circuit, including simple circuits, series circuits, parallel circuits and complex circuits with both series and parallel elements.
Describe what affects an object’s resistance and categorize resistors as ohmic or nonohmic
Interpret graphs about resistance I vs. V and V vs. R.
Know how to include ammeters and voltmeters in a circuit and what this says about their resistances.
Describe the structure of a capacitor.
Use transient currents to describe how steady state voltages and currents are established.
Describe how houses are wired and the role of circuit breakers.
Determine loss of energy to heat in wires and describe how it can be reduced.
Trace the conducting path through light bulbs.
Describe the production of electrical energy in batteries and the role of internal resistance.
Use the pressure metaphor for voltage and interpret color-coded voltage diagrams.

Magnetism (Ch. 24,25)
Explain the arrangements responsible for permanent magnets.
Describe what affects the strength of magnetic forces and an electromagnet’s field.
Describe the shape of magnetic fields around permanent magnets and charge carrying wires.
Describe the causes and beneficial effects of the Earth’s magnetic field.
Predict the direction of magnetic forces and induced currents.
Describe how magnetic forces are applied in electric motors and generators.
Determine currents and voltages produced by transformers.

Sound and Waves (Ch. 14,15)
Explain what a wave is.
Differentiate between longitudinal and transverse waves
Correctly use the vocabulary: medium, pulse, crest, trough, compression, and rarefaction.
Define and apply the following wave characteristics: period, frequency, velocity, wavelength, amplitude, and energy.
Apply the following relationships: T=1/f and v =f*wavelength.
Explain how standing waves are produced and correctly use the terms nodes and antinodes.
Explain the following wave behaviors, interference, beats, resonance, doppler effect and sonic booms.

Light (Ch. 16-19)
What is light?
a) Be able to describe strengths and weaknesses of the two models of light.
b) Be able to give effective examples showing the strengths of each model.
How light behaves
a) Colors.
i) What are primary, secondary and complementary colors.
ii) How are colors produced by dispersion, addition and subtraction of light.
b) Reflection
i) What is the law of reflection.
ii) Be able to locate images and make ray diagrams for reflection.
c) Refraction
i) What is it?
ii) What is Snell’s Law
iii) How did we determine a law for refraction?
iv) Be able to solve problems and draw ray diagrams.
d) Lenses
i) Be able to draw ray diagrams for converging and diverging lenses.
ii) Identify images as real or virtual.

Review Packet Key

The test will be Monday, not Friday.

Current Electricity Review Key

current electricity unit goals.

Current electricity goals

Know meanings of potential difference (voltage), current, resistance, power. Be able to use appropriate relationships between them with correct abbreviations and units.

Properly use the terms series, parallel and circuit.

Draw and decipher circuit diagrams.

Determine current, resistance, potential difference and power output for any part of a circuit, including

Simple circuits, series circuits, parallel circuits and complex circuits with both series and parallel elements.

Describe what affects an object’s resistance and categorize resistors as ohmic or nonohmic

Interpret graphs about resistance I vs. V and V vs. R.

Know how to include ammeters and voltmeters in a circuit and what this says about their resistances.

Describe the structure of a capacitor.

Use transient currents to describe how steady state voltages and currents are established.

Describe how houses are wired and the role of circuit breakers.

Determine loss of energy to heat in wires and describe how it can be reduced.

Trace the conducting path through light bulbs.

Describe the production of electrical energy in batteries and the role of internal resistance.

Use the pressure metaphor for voltage and interpret color-coded voltage diagrams.

review key

Static Review Key

link for electric field simulation.

link for electric fields simulation

Electricity Unit 1 -- Static Electricity

Goals

1. Describe what it means for an object to be charged or neutral.
2. Describe three methods of charging.
3. State coulombs law and use it to describe the size and direction of electrical forces.
4. Sketch the electric field lines around point charges, dipoles and plates.
5. Sketch equipotential lines around point charges, dipoles and plates.
6. Qualitatively describe electric field strength, electric potential energy and voltage/potential and distinguish between them.
7. Solve problems with Coulomb’s law and the equations for electric field strength, potential energy and voltage.
8. Qualitatively explain electrical phenomena like lightning, static cling, shocks, grounding.
9. Describe the charge of an electron and how it was determined.
   
   Test : Friday 4/23
   Homework due: 4/22
   Possible lab worksheets from 4/15 and 4/22 due the next day.

Light Review Key

Even though the document may look blank below, you can still follow the link to the document.

Light Review Key

Light Unit - overview

Physics – Light Unit Goals

1) What is light?
a) Be able to describe strengths and weaknesses of the two models of light.
b) Be able to give effective examples showing the strengths of each model.

2) How light behaves
a) Colors.
i) What are primary, secondary and complementary colors.
ii) How are colors produced by dispersion, addition and subtraction of light.
b) Reflection
i) What is the law of reflection.
ii) Be able to locate images and make ray diagrams for reflection.
c) Refraction
i) What is it?
ii) What is Snell’s Law
iii) How did we determine a law for refraction?
iv) Be able to solve problems and draw ray diagrams.
d) Lenses
i) Be able to draw ray diagrams for converging and diverging lenses.
ii) Identify images as real or virtual.


Important Dates:
3/2 Refraction Lab due
3/5 First Homework set due
3/12 Particle Model Lab due
3/19 Second Homework Set due
4/1 Fernwood Presentations
4/2 Test

Sem. Final Practice Cards

These cards were hard to scan and post. If you need a better copy, you can make a physical version for yourself from my origninals.


Sem 1 Review Cards

unit 4 practice questions

Unit 4 Review