The type of EM radiation that has wavelength just a bit longer than that of visible light is

a. ultraviolet.
b. infrared.
c. x-ray.
d. microwave.
e. gamma ray.


b

Physics & Space Science

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Using graphical methods, estimate the temperature distribution through the phenolic disk surrounding the silicon chip sketched in Figure 2-61. Then estimate the heat transfer per unit depth.

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What do we mean by a protogalactic cloud?

A) a cloud of hydrogen and helium that contracts to become a galaxy B) a term once used historically to refer to any galaxy C) the cloud-like halo that surrounds the disks of spiral galaxies D) a cloud of gas that was once a galaxy

Physics & Space Science

A double-slit experiment uses coherent light of wavelength 633 nm with a slit separation of 0.100 mm and a screen placed 2.0 m away

(a) How wide on the screen is the central bright fringe? (b) What is the distance on the screen between first-order and second-order bright fringes? (c) What is the angular separation (in radians) between the central maximum and the first-order maximum?

Physics & Space Science

A large pipe organ at a church has valves that allow either one end of the pipe to be open and the other end closed, or else both ends open. If when one end is open and the other end is closed the pipe can produce a fundamental frequency of 40 Hz, what will be the fundamental frequency when both ends of the pipe are open?

1.80 Hz 2.40 Hz. 3.20 Hz. 4.10 Hz.

Physics & Space Science