What is the Dittus-Boelter equation used for?

What will be an ideal response?


This is a popular and useful equation for predicting the Nusselt number and thus
the convective heat transfer coefficient in fully developed turbulent flow of a
fluid in a closed channel

Physics & Space Science

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What is steady state?

What will be an ideal response?

Physics & Space Science

At present, what is the primary way that astronomers carry out SETI programs (that is, search for extraterrestrial intelligence)?

A) by using radio telescopes to search for signals from extraterrestrial civilizations B) by analyzing the spectra of extra-solar planets in an attempt to detect oxygen C) by searching for planets around distant stars D) by using X-ray telescopes to search for signals from extraterrestrial civilizations E) by analyzing high-resolution images of nearby stars in search artificial structures

Physics & Space Science

Light consisting of a mixture of red and blue light enters a 40°, 70°, 70° prism along a line parallel to the side opposite the 40° vertex. The index of refraction of the prism material for blue light is 1.530, and for red light it is 1.525

What is the angle between the two emerging beams of light? A) 0.5° B) 0.9° C) 0.1° D) 0.3° E) 0.7°

Physics & Space Science

Why does Michael Jordan appear to defy gravity as he slam dunks the ball? (After you have thought about this question, see page 68 of your textbook.)

a. He is an extraordinary athlete who is able to jump much higher than most humans. b. His motion is that of a projectile, and a projectile's motion is such that its vertical speed is minimal while at the high point of its trajectory. c. He is able to use air resistance to cushion his vertical motion. d. He is in the process of moving upward. e. His horizontal motion keeps him above the ground.

Physics & Space Science