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?
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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.
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
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
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