College Physics II
College Physics II PHY 132
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This 4 page Class Notes was uploaded by Afton Corwin DVM on Sunday October 11, 2015. The Class Notes belongs to PHY 132 at Eastern Kentucky University taught by Rodney Piercey in Fall. Since its upload, it has received 15 views. For similar materials see /class/221439/phy-132-eastern-kentucky-university in Physics 2 at Eastern Kentucky University.
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Date Created: 10/11/15
1 During photosynthesis a plant stores less energy in chemical form than it absorbs in the form of sunlight Which best describes what happens to the rest of the energy from the Sun A It is destroyed B It is turned into proteins J C It is transformed into heat D It is used to create electrons 2 A motor shows a 60 efficiency of conversion of fuel energy into mechanical energy Because of the law of conservation of energy which must be true A The work the motor can do is greater than its mechanical energy content B A small mass of new fuel is produced during the motor s operation C Kinetic energy has a higher density than fuel energy J D Some of the fuel energy is transformed into other forms of energy 3 A lit match releases energy in the following forms HEAT LIGHT SOUND Measuring the sum of energies released in these forms gives a good measure of which property of the unlit match A its electrical energy J B its chemical energy C its mass D its temperature ltgt 4 A ball falling from a window increases in kinetic energy ts rate of increase in kinetic energy MUST be approximately equal to which of the following A its total original gravitational potential energy J B its rate of transformation of gravitational potential energy C its total original inertia D its rate of transformation of inertia into momentum 5 An electrical hot plate consumes slightly more than 500 joules of electrical energy Which choice BEST represents the MOST probable energy output of the hot plate B 2501 J c 5001 D 1000 J 6 1800 grams of water undergo a reaction yielding oxygen gas and 200 grams of hydrogen gas How many grams of oxygen gas must have been produced A 200 g B 900 g J c 1600 g D 2000 g 7 In a laboratory experiment 2300 grams of sodium react with 3500 grams of chlorine to produce sodium chloride or table salt How many grams of table salt must have been produced A 1200 g B 2300 g c 3500 g I D 5800 g
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