for each of the following directions of the electron’s velocity: (a) horizontal and due north; (b) horizontal and 30° west of north; (c) due north‚ but at 30° below the horizontal; (d) straight upward. 2. (a) Find the direction of the force on a proton moving through the magnetic fields in Figure 1‚ as shown. (b) Repeat part (a)‚ assuming the moving particle is an electron. [pic] Figure 1 3. Find the direction of the magnetic field acting on the positively
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Electrostatics Lab Name: Bryan Michel Materials: Styrofoam cups Styrofoam plates PVC Pipe Fur Scotch Tape Procedures: You will be investigating charging object by friction. When you are asked to write your observations‚ please do so in a clear‚ complete manner. 1. Tape a piece of string to a Styrofoam cup and hang it from the edge of the desk so that it can move freely. Rub the outside of the cup with fur. Rub a PVC pipe with fur and bring it near the hanging cup.
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Atomic Structure Quiz Sample Questions 1. Why do only the number of protons and the number of neutrons make up the atomic mass of an element‚ but not the electrons? We generally do not use the number of electrons when calculating the atomic mass of an atom because they weigh so little (precisely 1/1836 AMU)‚ and only in precise calculations are the masses of the electrons included in atomic mass. 2. What was the difference between Mendeleev’s table and Mosley’s new arrangement? Mendeleev arranged
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Tun Dr Mahathir Mohamad‚ Fourth Prime Minister of Malaysia Group Assignment for Malaysian Studies (MPW 1133) QUESTION: Discuss the background and contribution of Tun Dr Mahathir Mohamad‚ 4th Prime Minister of Malaysia. Tun Dr Mahathir Muhamad Introduction “Malaysians have all sorts of emotions when it comes to Tun Dr Mahathir‚… You just have to say his name‚ and you get all sorts of reactions…” Comments made by Lina Tan (Editor and Producer of Mahathir‚ on the History Channel (Astro
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electrons) “LEO the lion says GER” LEO = lose electrons‚ oxidized GER = gain electrons‚ reduced IN TEXTBOOK acronym– oxidation is loss‚ reduction is gain (OILRIG) See your grade 12 chemistry notes for review. REDOX Reactions Electrons travel with protons. Therefore‚ addition or removal of hydrogen associated with REDOX reactions. Becomes oxidized C6H12O6 + 6O2 6CO2 + 6H2O + ATP + heat Becomes reduced Electron Carrier in cellular respiration NAD+ Nicotinamide adenine dinucleotide “Collects”
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of: – Nucleus • contains protons (+ charge) and neutrons (no charge) – Outside the nucleus • Contains electrons (extremely small‚ - charge) – In an atom‚ # of protons = # of electrons – SO…Atoms are electrically neutral! 1 9/22/2011 What makes elements different from one another? • Atomic number – the number of • Different elements contain different numbers of PROTONS! protons in the atoms of a particular element – Ex: Hydrogen has one proton and an atomic number of
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The Great Metabolic Race Metabolism comprises of a vital set of biochemical reactions that all living organisms require to sustain life. For a marathon runner‚ their physiological response to strenuous exercise depletes both their fats and carbohydrate storage in order to supply energy in the form of Adenosine Triphosphate (ATP). ATP is the energy form that the human body uses for biological processes such as movement and synthesis of biomacromolecules. In regards to running a marathon‚ the athlete
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atom can move up and down the energy levels‚ one level at a time‚ and can never stop in between. Every hydrogen atom is made up of a single electron - proton system. Because the negative electron is attracted to the positive proton‚ potential energy is created inside the atom.<br><br>He figured that the farther away the electron is from the proton‚ the greater the potential energy is inside. In conclusion‚ since hydrogen atoms emit light energy in specific frequencies‚ the hydrogen atom must be within
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table and vocab (65 points) Match the following items. (14 points) 1. emitted from a cathode ray tube Bohr 2. discovered the neutron Chadwick 3. discovered the electron JJ 4. postulated the quantum atom nucleus 5. discovered the proton electrons 6. father of atomic theory Dalton 7. location of most of the mass of the atom Bohr 1. unlike charges attract 2. like charges repel 3. charge on a neutron nonmetals 4. location of an electron periodicity
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CHE 140 Name__Chesi Spriggs First Hour Exam Potentially useful information 1000 g = 1 kg 1000 mL = 1 L 1 in = 2.54 cm 1 mL = 1 cm3 D = m/v Select the best choice for the following questions. ___e___ 1. A hypothesis is a(n) a. formulation of principles based on facts. b. modification of a theory. c. organized body of knowledge. d. tentative explanation of observations. e. None of the above. __b___ 2. The initial success of the Bohr theory was based
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