Hoo Sze Yen www.physicsrox.com Physics SPM 2011 CHAPTER 3: FORCES AND PRESSURE 3.1 Pressure Units of pressure Unit Note Pa SI unit N m-2 Equivalent to Pa N cm-2 cm Hg m water atm 1 atm = atmospheric pressure at sea level bar 1 bar = 1 atm Pressure is the force which acts normal per unit area of contact. P= F A where P = pressure [Pa] F = force [N] A = area [m2] For atmospheric pressure only 3.2 Pressure in Liquids Pressure in liquids are not dependent on the size or
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DESIGN AND FABRICATION OF RADIO CONTROLLED AIRPLANE Group Members: ADEEL AHMAD (080304) BABUR MANSOOR (080316) BILAL IFTIKHAR (080319) HAFIZ FAIZAN SHABBIR USMANI (080332) BE MECHATRONICS (7-A) Project Supervisor Group Captain (R) Muzaffar Ali Assistant Professor DEPARTMENT OF MECHATRONICS ENGINEERING FACULTY OF ENGINEERING AIR UNIVERSITY‚ ISLAMABAD
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1.On a swept wing aircraft if both wing tip sections lose lift simultaneously the aircraft will a) roll b) pitch nose up c) pitch nose down 2. Lift on a delta wing aircraft a) increases with an increased angle of incidence (angle of attack) b) decreases with an increase in angle of incidence (angle of attack c) does not change with a change in angle of incidence (angle of attack 3. On a straight wing aircraft‚ stall commences at the a) root on a high thickness ratio wing b) tip on
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the same purpose: Firstly‚ the principle applying to the mass and thickness of wings applies to any aerofoil surface in any shape or form. How do we know a delta wing and a swept wing have heavier masses than a straight wing? Two important things need to come into account when measuring the thickness and weighing certain types of wings‚ the structural ‘Aspect Ratio’ and the ‘Thickness Ratio’ of aerofoil sections. An aspect ratio is the span of an aircrafts wings‚ from tip to tip all along the axis of
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A Look Worth Dying For The theme of the poem‚ “Barbie Doll‚” by Marge Piercy is the overwhelming pressure society exerts on females to be stereotypically attractive and the willingness to go to great lengths in order to achieve “perfection.” Many females‚ especially teenagers‚ are faced with this feeling every day. Growing up during the age of advanced computer technology and social media only exacerbates this problem. Many adolescent girls can relate to the fear of being bullied because they do
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Why trade natural skin for plastic? Marge Piercy addresses this issue‚ though indirectly‚ in her poem "Barbie Doll". Piercy presents an innocent young girl‚ but conveys that she has fat legs and a big nose. Piercy explains that the child was a normal kid‚ not bad looking‚ not in bad shape‚ but simply does not meet the expectation of not having fat legs and a big nose. She is encouraged strongly to do this‚ and encouraged strongly to do that‚ but she can not fix herself up; The pressure is too
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“Barbie Doll”‚ by Marge Piercy and‚ “Hanging Fire” by Audre Lorde reveals each character and their struggle with their identity in society. Summary of “Barbie Doll” In the poem “Barbie Doll” by Marge Piercy‚ we read about a young girl who has self image problems. Due to the expectations of society‚ she is not happy with her physical appearance. She had many good qualities but is unable to see these for herself. Instead she only sees is a “a great big nose and fat legs”(Piercy‚1936). In order to
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miniature stoves‚ play irons‚ and lipstick. These items are not only gifts that young girls would like to have but are also things that are considered feminine. However‚ the items used in the first stanza show how nice and feminine the "girl child" (Piercy 1) world may seem. The items symbolize the gender role that a young girl possesses very early in life. Much like a Barbie doll‚ all girls are expected to be a certain way and enjoy activities thought to be feminine. The miniature stoves and irons
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In the poem “The Secretary Chant” by Margie Piercy‚ a woman working as a secretary is depicted as undervalued and unappreciated by her employer. With this poem being written in 1936‚ the idea of women in the workplace was fairly new. Women were not given equal treatment as employees and were in the beginning stages of their fight for equality. The year the poem was written most certainly plays an integral role in the poem’s tone‚ structure‚ diction‚ and theme. Throughout the poem‚ it is obvious that
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In “To Be of Use‚” Marge Piercy uses figurative language to create imagery that helps convey that the speaker wants to be useful and take initiative like the people they love but never does. The figurative language make people who take initiative seem inhuman. In one line‚ Piercy uses simile when she writes‚ “the black sleek heads of seals bouncing like half submerged balls.” By using this simile‚ Piercy piques the readers’ imagination‚ renewing their interest in the forgotten things people do. This
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