Fall wk 3 â Thus.14.Oct.04

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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
• Welcome, roll, questions
• Josh Skov
• break
• Calculus Ch.1 and Physics Ch.18

Energy Systems, EJZ

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
• Key points?
• Insights from team discussion?
• Questions?
• Review of heating
• Gas cycles and work
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 - review

Match each heat transfer mechanism to its medium:

• Conduction 1. Photons

B. Convection 2. Solids in contact

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

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

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

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
• PIQ
• Trigonometry review
• Polynomials
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