Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the...

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Work and Work and Power Power

Transcript of Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the...

Page 1: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

Work and Work and PowerPower

Page 2: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

AssignmentAssignment

I will number you into groups.I will number you into groups.

You will be working in chapter 8 of You will be working in chapter 8 of the book.the book.

Your group number will represent Your group number will represent your section of the chapter. your section of the chapter.

Page 3: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

ExpectationsExpectations

You will be presenting your section to You will be presenting your section to class. class.

The method of presentation is your The method of presentation is your choice. (notes, demonstrations, vocab choice. (notes, demonstrations, vocab game…) game…)

Your group will also generate 5 test Your group will also generate 5 test questions (multiple guess / calculations)questions (multiple guess / calculations)

Page 4: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

WorkWorkWork – a force applied over a Work – a force applied over a distancedistance

W= F(d)W= F(d)

units: F=Newton d=meterunits: F=Newton d=meterW= JoulesW= Joules

Page 5: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

W = F x dW = F x dTherefore:Therefore:

You must have MOTION in order to You must have MOTION in order to have work… something has to have work… something has to change positionchange position

Page 6: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

PowerPowerPower – the rate at which work Power – the rate at which work is doneis done

Power = Work/timePower = Work/time

Unit is Watt (joule/second)Unit is Watt (joule/second)

Page 7: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

Example ProblemsExample ProblemsIf a 450 N boulder is If a 450 N boulder is dropped 2.4 m in 25 dropped 2.4 m in 25 seconds, how much power seconds, how much power is exerted on the object?is exerted on the object?

Page 8: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

Example ProblemsExample Problems

How much work is done by a toy How much work is done by a toy car with an applied force of 12 car with an applied force of 12 N which is moved for 39 m?N which is moved for 39 m?

Page 9: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

The weight lifter lifted a mass of 100 kg (barbell) over her head in 5.21 seconds. Approximately how much power did she generate in raising the barbell?

Page 10: Work and Power. Assignment I will number you into groups. You will be working in chapter 8 of the book. Your group number will represent your section.

A mechanic used a hydraulic lift to raise a 12,054 N car 1.89 m above the floor of a garage. It took 4.75 s to raise the car. What was the power output of the lift?

Example ProblemsExample Problems


Welcome to BASIC ELECTRONICS Come in Come in Tell me your Name Tell me your Name I will tell you a number, sit there I will tell you a number, sit there.

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At the Animal Arcade, the animals want you to work together. To play this game, you will need to select a number. The number will lead you to an animal.

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Move around the room with your Key Word Cards. When I call out a number you will need to make a group of that number. You will then need to … Read.

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Please find your name and desk number as you come in. You will sit in that desk this week.

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. Your account number that you used to log in with will appear in the "Client Number' field. At this point you will be able to administor existing users or create ...

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Did you know that if you put a group of fruit flies together, their number will double each day?

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Amazon Web Services€¦ · will you marry will you marry will you marry me? will you marry will you marry will you marry me?

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Draft UMHA September 2017 Newsletter 9Please include your phone number & number attending Saturday night dinner. Nominations will be entered in order received. You will receive a return

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