AVERAGE TYPING SPEED PER MINUTE. AVERAGE TYPING SPEED

typing speed

Words per minute, commonly abbreviated wpm, is a measure of input or output speed.

average

amount to or come to an average, without loss or gain; “The number of hours I work per work averages out to 40”
The result obtained by adding several quantities together and then dividing this total by the number of quantities; the mean
approximating the statistical norm or average or expected value; “the average income in New England is below that of the nation”; “of average height for his age”; “the mean annual rainfall”
An amount, standard, level, or rate regarded as usual or ordinary
a statistic describing the location of a distribution; “it set the norm for American homes”
The apportionment of financial liability resulting from loss of or damage to a ship or its cargo

minute

infinitesimal: infinitely or immeasurably small; “two minute whiplike threads of protoplasm”; “reduced to a microscopic scale”
A very short time
A period of time equal to sixty seconds or a sixtieth of an hour
The distance covered in this length of time by someone driving or walking
a unit of time equal to 60 seconds or 1/60th of an hour; “he ran a 4 minute mile”
characterized by painstaking care and detailed examination; “a minute inspection of the grounds”; “a narrow scrutiny”; “an exact and minute report”

Nat Geo

Picture: Cheetah (Protected Wildlife)
Location: Mandai Zoo, Singapore

This article is about the animal. For other uses, see Cheetah (disambiguation).
Cheetah[1]
Fossil range: Late Pliocene to Recent

Conservation status

Endangered (IUCN 3.1)[2]
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Carnivora
Family:Felidae
Subfamily:Felinae
Genus:Acinonyx
Brookes, 1828
Species:A. jubatus
Binomial name
Acinonyx jubatus
(Schreber, 1775)
Type species
Acinonyx venator
Brookes, 1828 (= Felis jubata, Schreber, 1775) by monotypy

The range of the cheetah
Subspecies
A. j. hecki
A. j. venaticus
The cheetah (Acinonyx jubatus) is an atypical member of the cat family (Felidae) that is unique in its speed, while lacking climbing abilities. As such, it is placed in its own genus, Acinonyx. It is the fastest land animal, reaching speeds between 112 kilometres per hour (70 mph) and 123 kilometres per hour (76 mph)[3] in short bursts covering distances up to 460 metres (1,500 ft), and has the ability to accelerate from 0 to 110 kilometres per hour (68 mph) in three seconds, greater than most supercars.[4].
The word "cheetah" is derived from the Sanskrit word chitrakāyaḥ, meaning "variegated body", via the Hindi चीता cītā.[5]

The cheetah’s chest is deep and its waist is narrow. The coarse, short fur of the cheetah is tan with round black spots measuring from 2 centimetres (0.79 in) to 3 centimetres (1.2 in) across, affording it some camouflage while hunting. There are no spots on its white underside, but the tail has spots, which merge to form four to six dark rings at the end. The tail usually ends in a bushy white tuft. The cheetah has a small head with high-set eyes. Black "tear marks" run from the corner of its eyes down the sides of the nose to its mouth to keep sunlight out of its eyes and to aid in hunting and seeing long distances.
The adult cheetah weighs from 40 kilograms (88 lb) to 65 kilograms (140 lb). Its total body length is from 115 centimetres (45 in) to 135 centimetres (53 in), while the tail can measure up to 84 centimetres (33 in) in length. Males tend to be slightly larger than females and have slightly bigger heads, but there is not a great variation in cheetah sizes and it is difficult to tell males and females apart by appearance alone. Compared to a similarly-sized leopard, the cheetah is generally shorter-bodied, but is longer tailed and taller (it averages about 90 centimetres (35 in) tall) and so it appears more streamlined.
Some cheetahs also have a rare fur pattern mutation: cheetahs with larger, blotchy, merged spots are known as ‘king cheetahs’. It was once thought to be a separate subspecies, but it is merely a mutation of the African cheetah. The ‘king cheetah’ has only been seen in the wild a handful of times, but it has been bred in captivity.
The cheetah’s paws have semi-retractable claws[6] (known only in three other cat species – the Fishing Cat, the Flat-headed Cat and the Iriomote Cat) offering the cat extra grip in its high-speed pursuits. The ligament structure of the cheetah’s claws is the same as those of other cats; it simply lacks the sheath of skin and fur present in other varieties, and therefore the claws are always visible, with the exception of the dewclaw. The dewclaw itself is much shorter and straighter than other cats.
Adaptations that enable the cheetah to run as fast as it does include large nostrils that allow for increased oxygen intake, and an enlarged heart and lungs that work together to circulate oxygen efficiently. During a typical chase its respiratory rate increases from 60 to 150 breaths per minute.[6] While running, in addition to having good traction due to its semi-retractable claws, the cheetah uses its tail as a rudder-like means of steering to allow it to make sharp turns, necessary to outflank prey who often make such turns to escape.
Unlike "true" big cats, the cheetah can purr as it inhales, but cannot roar. By contrast, the big cats can roar but cannot purr, except while exhaling. However, the cheetah is still considered by some to be the smallest of the big cats. While it is often mistaken for the leopard, the cheetah does have distinguishing features, such as the aforementioned long "tear-streak" lines that run from the corners of its eyes to its mouth. The body frame of the cheetah is also very different from that of the leopard, most notably so in its thinner and longer tail, and unlike the leopard, its spots are not arranged into rosettes.
The cheetah is a vulnerable species. Out of all the big cats, it is the least able to adapt to new environments. It has always proved difficult to breed in captivity, although recently a few zoos have managed to succeed at this. Once widely hunted for its fur, the cheetah now suffers more from the loss of both habitat and prey.
The cheetah was formerly considered to be particularly primitive among the cats and to have evolved appro

Chicago Municipal Airport – Northwest Airlines – Martin 202 – 1948

File No. 1-0117

CIVIL AERONAUTICS BOARD

ACCIDENT INVESTIGATION REPORT

Adopted June 29, 1949 Released: June 30, 1949

NORTHWEST AIRLINES, INC. -WINONA, MINNESOTA-AUGUST 29, 1948

The Accident

Northwest Airlines’ Flight 421, aircraft NC-93044, a Martin 202, en route from Chicago, Illinois, to Minneapolis, Minnesota, crashed near Winona, Minnesota, at approximately 1705, August 29, 1948. All of the 37 occupants were killed, and the aircraft was destroyed.

History of the Flight

Northwest Airlines’ Flight 421 departed from Chicago for Minneapolis at 1550, August 29, 1948. On board were 33 passengers, four crew members, 800 gallons of fuel, and 1,038 pounds of baggage. Total aircraft weight was 38,015 pounds which was within the certificated limit and it was properly loaded in reference to the center of gravity. Weather information available to the flight prior to departure indicated that relatively good flying conditions existed en route with the exception of scattered rain showers and thunderstorms which were in the vicinity of La Crosse, Wisconsin and Rochester, Minnesota.

Routine position reports were received from the flight as it progressed on course at Its flight plan altitude of 8,000 feet. At 1655, one hour and five minutes after takeoff from Chicago, the flight reported over La Crosse, 125 miles southeast of Minneapolis, and was at that time cleared to start an en route descent. Four minutes later, at 1659, the flight reported passing through the 7,000-foot altitude level. No indication of any trouble was contained in this transmission. This was the last word beard from the flight.

Between 1645 and 1700 several persons in the vicinity of Winona, Minnesota, approximately 95 miles southeast of Minneapolis were watching a thunderstorm which was approaching from the northwest, AS the storm moved over Winona, the wind increased in intensity and considerable lightning and thunder were observed. At this time, about 1705, Flight 421 was seen flying below the overcast. As it passed over Winona, the aircraft appeared to enter the roll cloud or the leading edge of the thunderstorm at which time it was lost from view. Seconds later parts of the airplane were observed falling. It was later found that the flight had crashed approximately 4 miles northwest of Winona on a bluff on the east side of the Mississippi River

Investigation

The wreckage consisted of four large airplane sections and a large number of small pieces. The large sections fell in a straight line on a bearing 335 degrees, which approximated the intended course of the flight. Two miles to the north of Winona the outer portion of the left outer wing was found. This part consisted of the wing structure ahead of the left aileron It had sustained little damage. A blue painted piece of fuselage structure was found imbedded in the leading edge.

Progressing In the direction of the aircraft’s flight, 0.7 of a mile from the left outer wing section, the tall assembly and the part of the fuselage to which the tail surfaces attach were found In the upright position. The left side of this fuselage section was torn diagonally aft from top to bottom through the left rear escape hatch. This tear was made in a downward and forward direction. The right side of this fuselage section was torn irregularly and also in a downward and forward direction similar to that of the left side. The vertical fin and rudder were in good condition, only a few wrinkles appearing in the skin of the fin. No damage resulted to the rudder which was capable of rotating freely and the control cables remained attached to the rudder quadrant. The horizontal stabilizer and elevators were bent, scratched and broken from impact forces when the assembly struck the ground. A piece of skin from the trailing edge of the left wing flap was found imbedded in the leading edge of the right horizontal stabilizer.

The third section of the aircraft, the inner-portion of the left outer wing, was located 35 of a mile northwest of the tail section, parts of the flap and the flap vane were still attached. It was a piece of the trailing edge of this wing flap that was found Imbedded In the right horizontal stabilizer This section of the wing had parted from the center section of the wing at station 187, the location of the wing root fitting.

The last and major portion of the aircraft wreckage was found 0.75 of a mile from the inner portion of the left outer wing. It covered an area of approximately 300 feet in diameter. Here were located the engines and propellers, most of the fuselage, the entire right wing, and the center section of the left wing. From an examination of this wreckage it was determined that the landing gear had been in the up position, and that the flaps had been retracted at the time of the accident. All safety belts were broken, and no seats were found attached to the floor mountings.

Engines and propellers we