Procedure and Data: 1. Tie the two pieces of string to the scales. 2. Hang a 1.00kg mass from the center of the string and move the clamps together such that the total angle between the two strings is about 15 degrees (half angle = 7.50). 3. Use the protractor to measure the exact angle between the strings. Record the angle and the force (scale reading) in the table. Also measure the appropriate sides of the triangles and compute the angles trigonometrically. 4. Move the strings farther apart
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methanol given its ∆Hf is -239 kJ/mol. (iv) Calc. the ∆Hf of Carbon Monoxide ‚given its ∆Hc is -284 kJ/mol. (v) Calc. the ∆Hf of carbon disulphide‚ given: S(s) + O2(g)→SO2(g) ‚ ∆H = -294 kJ/mol CS2(l) + 3O2(g)→CO2(g) + 2SO2(g) ∆H = -1072 kJ/mol 6. Use the following Bond Energies/ kJ/mol: Calculate the std. enthalpy change for the following reactions: (i) C2H4 (g) + H2 (g) →C2H6 (g) (ii) the combustion of 1 mole of CH4. 7. Calculate the std enthalpy change for the foll. reaction:
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1. Properties of light Reflection The speed of light is measured through the equation: v = λ f. However‚ it turns out that when light is reflected off a surface its speed stays the same. This was first proven by Sir Isaac Newton. Under the assumption of perfectly elastic collision‚ the laws of reflection follow from the laws of motion. To demonstrate‚ consider a particle traveling towards a flat frictionless surface whose horizontal and vertical velocity components are: VX and VY. When the particle
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Physics of Sports A sport isn’t just about winning; it is also about strategy‚ how the game is played‚ and performance of the athletes. Physics is the last topic many people associate with sports. However‚ physics can be applied to every aspect of any sport‚ which is a study referred to as Sports Science. Components of this study include gravity‚ projectile motion‚ acceleration‚ force‚ vectors‚ etc. With new technology that physics in sports introduce‚ more possibilities of physical science can
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THE COMPANY DALISAY SWEETS No. 18 Jesus St. Roosevelt SFDM Quezon City‚ Metro Manila‚ Philippines Business Numbers: (+632) 4129057 (+632) 3731617 Fax Number: (+632) 3740442 Description: Having its roots traced back to 1952; Dalisay Sweets is one of the leading food manufacturing companies in the industry today. Headquartered in Quezon City‚ Manila‚ Philippines; Dalisay Sweets manufactures and exports tropical fruit and vegetable
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PHYSICS OF THE PAST One hundred years ago‚ in a poky apartment in Bern‚ Switzerland‚ Albert Einstein‚ then just a 26-year-old patent office clerk still working part-time towards his PhD‚ published five ground breaking scientific papers. Each of these papers‚ written during Einstein’s annus mirabilis ‚ has become a "classic" in the history of science: On a Heuristic Viewpoint Concerning the Production and Transformation of Light ‚ which discusses optical photons and photoelectric effects. Molecular
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Men’s Daily Life Men were pretty much the bosses. However‚ The women were still Had freedom and power than other culture. Women would still fight in battles and tending their herds. While men were making decisions for their nation. Women’s Daily Life Women were important to the Mongols. They sometimes rule the empire. If a king had passed the women would play the role of their husband if their child was a infant. They had to juggle their life as King and their daily lives.
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Cosmology By: Jarrett Leuta-Douyere A New Look at Sports Growing up in a family filled with athletic desire to be great at whatever sport we would participate in and understanding simple physics in Cosmetology‚ I never realized how much physics comes into play when playing sports. We don’t call it physics when were playing‚ football‚ basketball‚ baseball because it’s just a natural feeling when were throwing a ball or trying to tackle someone. When we began to learn about Newton’s law of Gravity
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Introduction of Physics: Physics ("knowledge of nature") is the science concerned with the discovery and understanding of the most basic fundamental laws of the universe that control the way everything in the world around us behaves. Discoveries in basic physics have important ramifications for all of science. Physics attempts to describe the natural world by the application of logic scientific methods‚ including modeling by theoreticians. As a core scientific discipline‚ physics is concerned with
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just selling and advertising. It plays an essential role in providing consumers with need-satisfying goods and services. Marketing is a subject that touches everyone’s life. It is the means by which a standard of living is developed and delivered to people. Well‚ marketing plays an important role in society and affects my everyday life. It offers outstanding career opportunities in such areas as professional selling‚ marketing research‚ advertising‚ retail buying‚ distribution management‚ product management
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