Aluminum wire has resistivity of 0.286 x 10^-7 ohm-m where resistivity is defined as ohmarea/length. Determine the temperature distribution through an aluminum wire of ¼ inch diameter carrying 200 amperes of current if it is surrounded by air at 80ºF and with a convective heat transfer coefficient of 200 Btu/hr?ft^2?ºF.

What will be an ideal response?




Physics & Space Science

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The age of the whole Galaxy has been found from studies of its oldest stars in the ________ clusters that orbit in the Halo

Fill in the blank(s) with correct word

Physics & Space Science

In the Bohr model of the hydrogen atom

a. energy is quantized b. the electron's angular momentum is quantized c. the emission spectrum is quantized d. the absorption spectrum is quantized. e. all of the above

Physics & Space Science

A uranium nucleus (mass 238 units) at rest decays into a helium nucleus (mass 4.0 units) and a thorium nucleus (mass 234 units). If the speed of the helium nucleus is 1.8 × 10^6 m/s, what is the speed of the thorium nucleus?

a. 1.0 × 10^4 m/s c. 3.6 × 10^4 m/s b. 3.1 × 10^4 m/s d. 4.1 × 10^4 m/s

Physics & Space Science

An automobile travels due north with a speed of 93 km/h and an acceleration of 1.6 m/s2. All forces considered, the unbalanced force acting on the auto is

a. zero. b. southward. c. northward. d. downward. e. upward.

Physics & Space Science