Predict the cooling rate of a jominy bar at the jominy distance. Dqe, of 30 mm and 50 mm after 2 minutes.

What will be an ideal response?






Physics & Space Science

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Two metal rods, one silver and the other copper, are both attached to a steam chamber as shown in the figure, with a temperature of 100°C, at one end, and an ice water bath, with a temperature of 0°C, at the other

The rods are 5.0 cm long and have a square cross-section, 2.0 cm on a side. When steady state has been reached, how much heat flows through the two rods in 1.0 min? The thermal conductivity of silver is 417 W/(m ? K), and that of copper is 395 W/(m ? K). No heat is exchanged between the rods and the surroundings, except at their ends. A) 20 kJ B) 39 kJ C) 47 kJ D) 49 kJ E) 11 kJ

Physics & Space Science

Waves emitted by the Sun and terrestrial wave emissions are

A) the same except for their frequencies and wavelengths. B) entirely different kinds of waves. C) identical.

Physics & Space Science

A heater is rated at 1200 watts for a 120-volt source.The resistance of the heater is __________

Fill in the blank(s) with correct word

Physics & Space Science

An electron is trapped in an infinite square well (a box) of width 6.88 nm

Find the wavelength of photons emitted when the electron drops from the n = 5 state to the n = 1 state in this system. (c = 3.00 × 108 m/s, h = 6.626 × 10-34J ? s, mel = 9.11 × 10-31 kg) A) 6.49 ?m B) 5.45 ?m C) 5.91 ?m D) 7.07 ?m

Physics & Space Science