Posted by **Anonymous** on Sunday, December 4, 2011 at 12:28am.

Find the heat that flows in 1 s through a lead brick 18 cm long if the temperature difference between the ends of the brick is 6.8° C. The cross-sectional area of the brick is 14 cm2.

- Physics -
**drwls**, Sunday, December 4, 2011 at 2:08am
Look up the thermal conductivity of lead, k, and use the heat conduction equation.

Q = k*A*(dT/dX)*1 second

A = 14 cm^2

dT/dX is the temperature gradient, 0.378 degC/cm

k should be in units of calories or joules per (degC*cm)

## Answer this Question

## Related Questions

- Physics - Hi maybe someone can help me out, since my teacher isn't available ...
- math - A brick making company manufactures bricks with the same height and width...
- physics - A slab of a thermal insulator with a cross-sectional area of 115 cm2 ...
- chemistry - When hydrazine (N2H4) is burned in a 259-g brick container, the ...
- physics - There is a heat flow through a block of cross sectional area 21.5 cm2 ...
- physics - A lead brick with volume of 7*10^-4m^3 is floating in bath of liquid ...
- physics - A lead brick with volume of 7*10^-4m^3 is floating in bath of liquid ...
- calculus - A brick becomes dislodged from the top of a state building (at a ...
- Physics - A 9 kg lead brick falls from a height of 1.8 m. a) Find the momentum ...
- PHYSICS - Suppose you are in a spaceship in freefall between Earth and the moon...

More Related Questions