The Rules of the UniverseMartha Casquete

UTPA Lecturer

PHYS 2401.04: Physics Science & Engineer I

Newton Einstein

UCSD Physics 10

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UCSD Physics 10Digression: Why are you here?!

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“Because I was born.”“My parents made me come.”“My parents hate me.”“It’s just what you do after high school…”“I want to get a job, man”“I’m here to learn—to think—to build my brain.”

College is an opportunity: do your best to seize it!

What I wish for each of you to come out with:Ability to think critically (not afraid to think indep.)Willingness to see complexity/multiple sides of issue

UCSD Physics 10

About Me

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BA and MS in Physics from the University of Texas at Brownsville (UTB)

Coordinator of Student Development for 8 years at UTB

Adjunct Faculty at UTB (for 6 years –until 2010)

High School Math Teacher at Donna School District (2010 - 2013)

Math Adjunct Faculty at Ashford University (Summer 2013 )

Physics Lecturer at UTPA (Fall 2013)

UCSD Physics 10

About Me

Bronx Zoo –New York City

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I love traveling!! Grand Canyon -Spring 2013

UCSD Physics 10

About Me

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I love the outdoors: walking, bicycling and swimming.

Laguna Atascosa National Wildlife Refuge

UCSD Physics 10

Course Objectives

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1. Explore the approach that physics brings to bear on the world around us

2. Appreciate the influence physics has on us all Begin to see physics in the world around you Develop your natural intuition, stimulate

curiosity Think into the unknown (ooh that’s scary!)

3. Understand basic laws of physics Newton’s laws of motion, gravitation (even

relativity) Concepts of mass, force, acceleration, energy,

momentum, power, etc. Work and energy Temperature

UCSD Physics 10

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UCSD Physics 10

Course Objectives, continued

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5. Enhance your scientific literacy know the difference between science and the

supernatural feel encouraged to read popular science

articles/books

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Course Structure Session: 04

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Full class meets 2 times per week in ARHU 253T & TH 5:45 – 7:00 PM

LecturesPowerPoint presentationsLecture materials & HW will be made available on the

web (write it down)http://marthacasqueteutpa.weebly.com

Demonstrations DiscussionHWExams: 4Final

UCSD Physics 10

Resources

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Your Fellow Students!Encouraged to work together on homework, exercises (but not

on exams!)

Lecturer: Martha CasqueteOffice in SCNE building, Room 3.136, office hours T & TH 11:00–

1:00 PM, or by appointment, 956.665.2171, casquetem@utpa.edu

Web: marthacasqueteutpa.weebly.com

TextPhysics for Scientists and Engineers, 13th Edition by Serway and

Jewett used text to save you guys $$

UCSD Physics 10

Expectations

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Attend lectures and discussion sectionParticipate!

If it doesn’t make sense, ask! Everyone learns that way.

Don’t be bashful about answering questions posed.

In-class voting system should make this funDo the work:

It’s the only way this stuff will really sink inexams become easier

Explore, think, ask, speculate, admire, enjoy!Physics can be fun, enriching, beautiful

UCSD Physics 10Does it Pay to Come to Lecture?

Spring 200813

• No one who came more than 80% of time did very poorly• Few who came infrequently got more than a low B

UCSD Physics 10

GradingWeightWeight FormatFormat DueDue CommentsComments

15%15% Homework, Homework, Quizzes & Quizzes & Questions/ObsQuestions/Obs

Every WeekEvery Week No late submissionsNo late submissions

35%35% Chapter Exams Chapter Exams (4) (4)

See your See your syllabussyllabus

up to 10%up to 10% Class Particip.Class Particip.

Questions/ObsQuestions/Obs

Every lectureEvery lecture

MondayMonday

Be on time!!Be on time!!

<15%<15% Final*Final*

<25%<25% LabLab

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Where can I find more info?

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http://marthacasqueteutpa.weebly.com

Blackboard

UCSD Physics 10

Homework!!

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You are expected to answer all the problems/questions.

Only one or two questions will be selected.

Questions and Observations -Investigation part of HW

UCSD Physics 10Class Participation and Attendance

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All students are expected to prepare for and actively participate in class. I do not expect ‘perfect’ questions or answers.

Excellence means being prepared, involved, and taking responsibility for your own learning.

Every Monday/Tuesday you will turn In your Question /Observation

UCSD Physics 10What are these questions/observations?

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Science is as much about questions as answers.Every Monday/Tuesday, you’ll submit a question

or observation about the physical world around you (related to the topics in the syllabus).Something you’ve always wondered aboutSomething you recently noticedSomething that class prompted you to think about

I will choose one topic. You will research the topic and turn it in the following Monday. The topic will also be discussed in class.

Goal is to increase your awareness, observational skillsWe’re immersed in physics: easy to ignore, but also easy to

see!You’ll begin to think more deeply before shoving problem

asideAllow your natural curiosity to come alive

UCSD Physics 10Questions/Observations, continued

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What kind of question/observation? Questions

How thunders happen? Why does a car move?How do cel phones work? How do microwave ovens work? Why is the sky blue? Why not purple?

ObservationsI’ve noticed small rainbow patches in the sky way off

to the sides of the sun on hazy winter days. What are those?

I’ve noticed that when I remove my shirt in the dark during a dry weather I see sparks coming out of the shirts. What’s up with that?!

UCSD Physics 10

Let’s try it!!

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In a piece of paper write on the top left write the following information(for the HW you will do it in the index card):

Date Name Course and session Question/observation: I have heard that if I rub a balloon against a

fabric, it cling to the wall or any other place. Why is that possible?

UCSD Physics 10

Let’s discuss it!!

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You will have 2 minutes to discuss this subject with one or two of your classmates near you.

I will place music and when the music stop, you will return to your seats.

Then, you will have two minutes to sit down and write down your ideas

Now, STAND UP and find a partner.

UCSD Physics 10

What can you tell me?

Questions??

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UCSD Physics 10

Clickers

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We will use infrared transmitters in every lectureAs a check on understandingTo give practice on quiz-like questionsInstant feedback (for me and for you)Surveys/opinion gatheringClass Participation!!!

You will need to go to the Physics and Geology Department (PSB 1.118) to pick up your clicker.

You’ll register your clickers through blackboard siteThrough blackboard you will sign in and click on this

class. In the left side there is a tab that reads: clicker registration . Enter clicker’s number.

UCSD Physics 10

Homework 1bInstructions in weeblyCheck out your clickerRegister in BlackboardBring the HW 1b to Instructor Casquete’s office (see her office hours) by Tuesday, September 3.

20% reduction per day. Spring 200824

UCSD Physics 10

Can I text or use my cel. phone during class?

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UCSD Physics 10

What will happen?

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UCSD Physics 10

Any Questions on Course Structure?

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UCSD Physics 10

QUIZ # 1 Date: Name: Major: Course and Session:

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In the paper provided by the instructor you will answer three questions from the following:

1) Where is Instructor Casquete’s office located?2) Where do you need to pick up the clickers? 3) When is the question/observation due?4) What will happen to you if you are found

texting? 5) When do you need to submit the

question/observation?6) What percentage of your grade is the lab?7) What percentage of your grade is

participation?

UCSD Physics 10

a) 0.0241

b) 79,241

= 2.41 X 10-2

= 7.92 X 104

1) Express the following numbers in scientific notation with three significant figures:

UCSD Physics 10 2) Solve 3x + 2 = 4x - 1

- 3x - 3x

2 = x - 1

+ 1 + 1

3 = x

3(3) + 2 = 4(3) - 1

9 + 2 = 12 - 1

1. Draw “the river”2. Subtract 3x

from both sides3. Simplify4. Add 1 to both

sides5. Simplify6. Check your

answer

UCSD Physics 10 3) Solve 8y - 9 = -3y + 2

+ 3y + 3y

11y – 9 = 2

+ 9 + 9

11y = 11

11 11

y = 1

8(1) - 9 = -3(1) + 2

1. Draw “the river”2. Add 3y to both

sides3. Simplify4. Add 9 to both sides5. Simplify6. Divide both sides

by 117. Simplify8. Check your answer

UCSD Physics 10

1. 4

2. -3

3. -4

4. 3

4) What is the value of x if -7(x – 3) = -7?

Answer Now

UCSD Physics 10

What is the value of x if 3(x + 4) = 2(x - 1)?

Answer Now

1. -142. -133. 134. 14

UCSD Physics 10

5) Solve for x

84

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62

5

xx

)62(3)84(5 xx

3664020 xx

7

11x

UCSD Physics 10

THE QUADRATIC FORMULA

The solutions of the quadratic equation a x 2 + b x + c = 0 are

– b b 2 – 4 a c

2a

x =when a 0 and b 2 – 4 a c ≥ 0.

You can read this formula as:

x equals the opposite of b, plus or minus the square root of b squared minus 4 a c, all divided by 2 a.

UCSD Physics 10Finding the x-Intercepts of a Graph

The x-intercepts occur when y = 0.

0 = –1x 2 – 2 x + 5

–( b ) ( b ) 2 – 4( a )( c )2( a )x =

2 4 + 20

–2

x =

2 24

–2

x =

Substitute 0 for y, and

identify a = 1, b = –2, and c = 5.

Substitute values in the

quadratic formula.

Simplify.

Solutions

The equation has two solutions:

2 24–2x =

2 + 24–2x = –3.45

2 – 24–2x = 1.45

SOLUTION

y = –x 2 – 2 x + 5 Write original equation.

UCSD Physics 10

Spring 200837

y = –x 2 – 2 x + 5

Solve the following quadratic equation