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(4)
2
1 (1)
?x · z הלפכמה תאצות היהת המ
5 5 42 7 (1) 5 5 1 < x (1) O 2,500 (4) 1,500 (3) 2,000 (2) 1,000 (1) x < 1 (4) 1 < x < 0 (3) 0 < x < 1 (2) x + z = y :ןותנ (2) ?ןכתיי אל םיאבהמ המ 8 (2) רתויה לכל אוה x ,ךכיפל O 5 y , x 1 , y 0 :ןותנ .14 5 = (3) .O םזכרמש םיהז םילגעמ העברא םינותנ .16 x 3 (3) x 1 ?רתויב ךוראה אוה םישגדומה םיווקהמ הזיא O 5 .x < y < z

39 7 7 50

.5:00 העשה לע הרומה ןועש םכינפלש טוטרסב .5 Text II (Questions 18-22)

12 ?ןועשה יגוחמ ןיב הרצונש תיווזה לדוג המ (1) The first time Wilbur and Orville referred to themselves as "The Wright
Brothers" was when they started their own printing firm at the ages of 22 and 18.
120° (1)
Using a damaged tombstone and buggy parts, they built a press and printed odd jobs
? 150° (2)
as well as their own newspaper.
160° (3)
170° (4) (5) In 1892, the brothers bought bicycles. They began repairing bicycles for friends,
5
then started their own repair business. They opened up a bicycle shop in 1893, and
three years later, made their own bicycles called Van Cleves and St. Clairs. While
םירבג 30 .הבינע םגו םייסנכמ םג וא הבינע וא םייסנכמ םישבול לעפמב םידבועה םירבגה לכ .6
nursing Orville, who was sick with typhoid in 1896, Wilbur read about the death of a
.הבינע םיבנוע םגו םייסנכמ םישבול םירבג 18 ו הבינע םיבנוע םירבג 22 ,םייסנכמ םישבול
famous German glider pilot. The news led him to take an interest in flying. On May
?לעפמב םידבוע םירבג המכ
(10) 30, 1899, he wrote to the Smithsonian Institution for information on aeronautical
research.
34 (1)
48 (2) In August of 1900, Wilbur built his first glider. He then contacted the U.S.
52 (3) Weather Bureau for information on windy regions of the country. Reviewing the list,
40 (4) he chose a remote sandy area off the coast of North Carolina named Kitty Hawk,
(15) where winds averaged 13 mph. He and Orville then journeyed to Kitty Hawk where
they tested the 1900 glider. The following year, they tested a new and improved
.(AB = BC) ,ABC םייקוש הוושו תיווז רשי שלושמ םכינפלש טוטרסב .7
A ,(BD = DC) BDC םייקוש הוושו תיווז רשי שלושמ ונב (BC) ויבצינמ דחא לע glider with a 22-foot wingspan. A disappointing performance by the 1901 glider
prompted the Wright brothers to construct a wind tunnel to test the effectiveness of a
.טוטרסב ראותמכ ,ולש רתיה אוה BC רשא
variety of wing shapes. Using the results of the wind tunnel experiments, they
?BDC שלושמל ABC שלושמ ןיב םיחטשה סחי המ (20) constructed their 1902 glider. Testing it at Kitty Hawk in October, they met with
success, gliding a record 620 feet. Once again they returned to Dayton and began
22 :1 (1)
work on developing a propeller and an engine for their next effort: a flying machine.
B C 2 : 1 (2)
Having designed a propeller with the same principles they used to design their
:
21 (3)
wings, Wilbur and Orville then built their own 4-cylinder, 12-horsepower engine.
םינותנה יפל תעדל רשפא יא (4)
D (25) They built the 1903 Flyer in sections in the back room of their cycle shop at 1127
West Third in Dayton. When completed, it was shipped down to Kitty Hawk and
.a < b < c :ש ךכ ,םייבויחו םימלש םירפסמ םה c ו b ,a .8 assembled. On December 14, 1903, Wilbur won a coin toss and made the first
a + b + c = 9 :ןותנ attempt to fly the machine. He stalled it on take-off, causing some minor damage.
The plane was repaired, and Orville made the next attempt on December the 17 . At
th
?םינותנה תא םימייקמ םינוש c יכרע המכ
(30) 10:35 a.m., he made the first heavier-than-air, machine powered flight in the world. In
4 (4) 3 (3) 5 (2) 1 (1) a flight lasting only 12 seconds and covering just 120 feet, Orville did what men and
women had only dreamed of doing for centuries - he flew.
אבה דומעל וכישמה