Physics Moment of a force: Moment of a force = force x perpendicular distance of the line if action if the force from fulcrum Law of moments: When a body is in equilibrium the sum of the clockwise moments about any point equals the sum of the anticlockwise moments about the same point. Centre of mass: Centre of mass is the point where whole mass of the body assumes to be concentrated. II. If the vertical line through the centre of mass is outside the base it will be a topples but if it’s passed
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2.4 Galileo Galilei: Sixteenth-Century “New Scientist” 1. In your own words explain why Albert Einstein considered Galileo to be the “father of modern science” Albert Einstein considered Galileo to be the father of modern science because of how many of Galileo’s discoveries have become the basis of today’s science. 2. Why did Galileo choose to use a ramp to perform his acceleration experiment? Technology during Galileo’s time was still quite primitive. His experiment which required him to drop
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This year in science‚ we were paired up in groups to build a car powered only by a rubber band. There was a lot of physics and thought put behind the planning of our car. The rubber band moved the car by storing up elastic potential energy which then turned into kinetic energy when released. Newton’s Laws of Motion also come in handy when thinking about how to keep the car moving. “An object in motion stays in motion.” There was also a lot of thought put into the wheels. We had to be aware of the
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Therefore the sum of all the energies in the system is a constant. TMEinitial=TMEfinal 3. Explain the basic ideas that govern the design and operation of a roller coaster. A roller coaster is operated and designed through the application of Physics. The law of Conservation of Energy governs the changes in a coaster ’s speed and height. Simply put‚ the higher an object is off the ground‚ the more potential energy it has - that is‚ potential to gain speed as it falls. As it falls toward the ground
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separated by a distance of 0.40 m. 2. Determine the electrical force of attraction between two balloons that are charged with the opposite type of charge but the same quantity of charge. The charge on the balloons is 6.5 x 10-7 C and they are separated by a distance of 2.50 m. 3. Determine the electrical force of attraction between two balloons with separate charges of +3.5 x 10-8 C and -2.9 x 10-8 C when the electrical force is 2.16
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Structure of Matter | | 1. | An element consists of three isotopes in the relative abundance given below. What is the atomic mass of this element? | | 30.00% = 40.00 amu50.00% = 41.00 amu20.00% = 42.00 amu | | (A) | 40.90 | | (B) | 41.00 | | (C) | 41.90 | | (D) | 42.20 | | (E) | 42.90 | | | 2. | The total number of electrons that can be accommodated in the fourth principal energy level is _____ | | (A) | 2 | | (B) | 8 | | (C) | 18 | | (D) | 32 | | (E)
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PHYS 2102 Final Exam Fall 2008 Name :________________________ Student # : _________________________ Section (circle one): 001 (Dr. Leilabady) 002 (Dr. Astratov) 092 (Dr. Aktas) You have 2 ½ hours to complete your answers There are 12 questions‚ 10 points each Exam graded out of 100 points (i.e. there is up to 20% bonus opportunity) This is a closed book exam. I understand I am not to use any notes or information other than on this exam sheet. I may use a pocket calculator
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that are not held as vault cash‚ lends money to banks and thrifts‚ provides for check collection‚ acts as fiscal agent for the Federal government‚ supervises the operation of all US banks‚ and has responsibility for regulating the supply of money. #7 How do each of the following relate to the financial crisis of 2007-2008? (a)Declines in real estate values: Home prices rapidly increased because of subprime mortgage loans issued to risky borrowers. (b)Subprime Mortgage Loans: Banks issued loans to
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Name: __________________________ Date: _____________ |1. |British civil service workers in executive positions live longer than those in clerical positions. This best illustrates the | | |value of: | |A) |emotion-focused coping. | |B) |the general adaptation
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amounts of A) energy. B) power. C) both of these. D) none of these. 6) If you do work on an object in half the usual time‚ your power output is A) half the usual power output. B) the usual power output. C) twice the usual power output. 7) Exert 1 N for a distance of 1 m in 1 s and you deliver a power of A) 1 W. B) 2 W. C) 1/3 W. D) 3 W. E) none of these. 8) Do 100 J of work in 50 s and your power output is A) 1/4 W. B) 1/2 W. C) 2 W. D) 4 W. E) more than 4 W
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