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Fall wk 3 – Thus.14.Oct.04. Welcome, roll, questions Josh Skov break Calculus Ch.1 and Physics Ch.18 Looking ahead. Energy Systems, EJZ. Welcome Josh Skov. Sustainability guru Greener by association The Good Company (details on our research webpage

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fall wk 3 thus 14 oct 04
Fall wk 3 – Thus.14.Oct.04
  • Welcome, roll, questions
  • Josh Skov
  • break
  • Calculus Ch.1 and Physics Ch.18
  • Looking ahead

Energy Systems, EJZ

welcome josh skov
Welcome Josh Skov
  • Sustainability guru
  • Greener by association
  • The Good Company (details on our research webpage
  • How to measure sustainability indicators on campus?
finish physics ch 18
Finish Physics Ch.18
  • Key points?
  • Insights from team discussion?
  • Questions?
  • Review of heating
  • Gas cycles and work
energy and heat review
Energy and heat - review

1. Which are not units of Energy?

  • Joules B. ergs C. Kilowatt-hr D. Watts

2. Which is a bigger temperature change?

A. DT = 1°F B. DT = 1°F

  • How does the temperature of water change as it freezes?

A. Gets colder B. unchanged C. Gets warmer

energy and heat review1
Energy and heat - review

Match each heat transfer mechanism to its medium:

  • Conduction 1. Photons

B. Convection 2. Solids in contact

C. Radiation 3. Flowing fluid

heat energy work review
Heat, energy, work - review

Heat required to raise the temperature of a substance:

Q = m c DT

Heat required to change state:

Q = m L

Work done by (or on a gas) = area under P(V) curve

Practice: Problem # 27, 29, 32, 33

heat energy work new
Heat, energy, work - new

Gas cycle: Heat in = Work done + internal energy

Q = W + E

Electric Power = Voltage * Current: P = VI (p.695)

Ohm’s law: Voltage = Current * Resistance: V = IR

Radiation: Prad = s e A T4

Practice Problems: Ch.18 # 94, 52, Ch.26 # 43(a)

phys 18 hw
Phys 18 HW

Thermal (and basic) physics problems due this Thus:

Ch.1 #5, 7, 16, 18, 24, 26, 29

Ch.18 #4, 5, (24), 26, 28, 35, (73, 85)

Problems in (parentheses) are not available on eGrade.

Hand them in separately?

I will post solutions after class Thus.

Phys 18 HW 2 due next Thus:

Ch.18 # (27), 29, 32, 33, (94), 52

finish calculus ch 1
Finish Calculus Ch.1
  • PIQ
  • Trigonometry review
  • Polynomials
calc 1 hw 2
Calc 1 HW 2

Calc 1 HW 2

1.4 # 1, 2, 9, 11, 14, 18, 26, 35

1.6 # 2, 4, 14, 28

Next Thus: Calc 1 HW 3

1.5 # 1, 10, 14, 16, 20, 29, 31, 34, 36

1.6 # 8, 18, 23

looking ahead
Looking ahead
  • Seminar in Sem II C2109 tonight
  • Please put your team’s best Q on the board

before 5:00

  • Friday: Weekly energy essay due
  • Next week:
    • Monday: Clean Energy Fair- Sem II courtyard
      • Telescope: noon between Lab I and LabII
      • 3:00 – class will go hear speaker
    • Tuesday: Biodiesel debate
    • Tutor on Wed.1-3 and Fri.10-12
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