Area: 9. The area of the front cover of a book
10. The surface area of a microchip
Activity 5.
Choose the best approximation of temperature for the following:
1. A good day to go swimming:
15°C, 32°C, 55°C
2. A feverish condition:
29°C, 33°C, 38°C
3. A moderate oven temperature:
300°F, 400°F, 450°F
4. A good night to sleep:
15°C, 34°C, 58°C
5. A glass of hot milk:
10°C, 15°C, 40°C
What I Have Learned

If steel is more dense that lake water, why can a boat float

Which of the following statements correctly describes a transformer?

Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.