Problem:Three flashing red lights around the Xbox 360 power button instead of the one to four green lights indicating normal operation represent an internal problem that requires service. This error was soon nicknamed the "Red Ring of Death", echoing Windows' Blue Screen of Death error. Warning signs may include freeze-ups, graphical problems in the middle of gameplay, such as checkerboard or pinstripe patterns on the screen, and sound errors; mostly consisting of extremely loud noises that can be affected by the volume control, and the console only responds to pressing the power button to turn it off. These events may happen once or several times until the hardware failure occurs, or not at all. If the console freezes occasionally, the error will not necessarily follow. The technical problems seem to affect some generations of consoles more than others, e.g. Xenon or Zephyr. Those problems may also cause some freezing screens.

Answer this question based on the passage: what do the green lights on xbox 360 mean?
Solution:OK... To answer the above question, the relevant sentence is: Three flashing red lights around the Xbox 360 power button instead of the one to four green lights indicating normal operation represent an internal problem that requires service.
normal operation.


Student A:The California Gold Rush (1848 -- 1855) began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California. The news of gold brought some 300,000 people to California from the rest of the United States and abroad. The sudden influx of immigration and gold into the money supply reinvigorated the American economy, and California became one of the few American states to go directly to statehood without first being a territory, in the Compromise of 1850. The Gold Rush had severe effects on Native Californians and resulted in a precipitous population decline from disease, genocide and starvation. By the time it ended, California had gone from a thinly populated ex-Mexican territory to the home state of the first nominee for the Republican Party.

Based on this passage, where was the first gold strike in california setting off the 1849 gold rush?
Student B:OK... The relevant information to answer the above question is: The California Gold Rush (1848 -- 1855) began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California.
Sutter 's Mill in Coloma , California.


Problem:Three discoveries challenged this foundation of magnetism, though. First, in 1819, Hans Christian Ørsted discovered that an electric current generates a magnetic field encircling it. Then in 1820, André-Marie Ampère showed that parallel wires having currents in the same direction attract one another. Finally, Jean-Baptiste Biot and Félix Savart discovered the Biot -- Savart law in 1820, which correctly predicts the magnetic field around any current-carrying wire.

Answer this question based on the passage: who discovered the magnetic field of electric current?
Solution:OK... The important part for answering this question is: First, in 1819, Hans Christian Ørsted discovered that an electric current generates a magnetic field encircling it.
Hans Christian Ørsted.


Student A:Bees are flying insects closely related to wasps and ants, known for their role in pollination and, in the case of the best-known bee species, the European honey bee, for producing honey and beeswax. Bees are a monophyletic lineage within the superfamily Apoidea and are presently considered a clade, called Anthophila. There are nearly 20,000 known species of bees in seven recognized biological families. They are found on every continent except Antarctica, in every habitat on the planet that contains insect-pollinated flowering plants.

Answer this question: is a bee an animal or an insect?
Student B:OK... This is the relevant information: Bees are flying insects closely related to wasps and ants, known for their role in pollination and, in the case of the best-known bee species, the European honey bee, for producing honey and beeswax.
flying insects.


Problem:"Do Not Stand at My Grave and Weep" is a poem written in 1932 by Mary Elizabeth Frye. Although the origin of the poem was disputed until later in her life, Mary Frye's authorship was confirmed in 1998 after research by Abigail Van Buren, a newspaper columnist.

Based on this passage, who wrote do not stand by my grave and weep?
Solution:OK... To answer this question, we should know that: "Do Not Stand at My Grave and Weep" is a poem written in 1932 by Mary Elizabeth Frye.
Mary Elizabeth Frye.


Problem:For medical purposes, X-ray filters are used to selectively attenuate, or block out, low-energy rays during x-ray imaging (radiography). Low energy x-rays (less than 30 keV) contribute little to the resultant image as they are heavily absorbed by the patient's soft tissues (particularly the skin). Additionally, this absorption adds to the risk of stochastic (e.g. cancer) or non stochastic radiation effects (e.g. tissue reactions) in the patient. Thus, it is favorable to remove these low energy X-rays from the incident light beam. X-ray filtration may be inherent due to the X-ray tube and housing material itself or added from additional sheets of filter material. The minimum filtration used is usually 2.5 mm aluminium (Al) equivalent, although there is an increasing trend to use greater filtration. Manufacturers of modern fluoroscopy equipment utilize a system of adding a variable thickness of copper (Cu) filtration according to patient thickness. This typically ranges from 0.1 to 0.9 mm Cu.

Based on this passage, the function of an x ray beam filter in diagnostic radiology is to?
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
OK... To answer the question, consider the following: For medical purposes, X-ray filters are used to selectively attenuate, or block out, low-energy rays during x-ray imaging (radiography).
selectively attenuate , or block out , low - energy rays during x-ray imaging ( radiography ).