# Work Energy and Power Practice Test - McKinney ISD

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AP Physics 1 Work Energy and Power Practice Test Name_____ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Two objects, one of mass m and the other of mass 2m, are dropped from the top of a building. If there is no air resistance, when they hit the ground

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Work Energy and Power Practice Test - McKinney ISD
AP Physics 1 Work Energy and Power Practice Test Name_____ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Two objects, one of mass m and the other of mass 2m, are dropped from the top of a building. If there is no air resistance, when they hit the ground
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Work, Energy, & Power Practice Quiz Name VOCABULARY ...
Type of energy associated with the motion of an object. ... The sum of the kinetic and potential energy in a system. ... Energy can be converted to different forms or transferred to different places but the total amount of energy does not change. True/False 13. A force acting in the direction an object is moving does positive work.
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Practice Test: Work, Energy, Gravitation, Electric Force, Electric Field, Circuits True/False Indicate whether the statement is true or false. ____ 1. In materials such as metals, the outer shell electrons are loosely bound to the nuclei of their atoms and are free to move from one atom to another. These materials are good conductors. ____ 2.
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1. Compound machines are combinations of one or more simple machines. 2. A wheel and axle is really a lever that rotates in a circle. 3. A screw is a flat slanted surface with no moving parts. 4. A wedge is an inclined planes that moves. 5. Work input is the amount of work done by the machine 6.
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AP Physics 1 Rotational Motion Practice Test ... Which of the following statements are true about the skater during this process? (There could be more than one correct choice.) A) Her angular momentum remains constant. ... She is subject to a constant non-zero torque. 2) The moment of inertia of a solid cylinder about its axis is given by 0 ...
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2-D Motion Practice Test - McKinney ISD Staff Sites
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AP Physics 1 Rotational Motion Practice Test MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A spinning ice skater on extremely smooth ice is able to control the rate at which she rotates by pulling in her arms.
Work and Energy Chapter 5 Work, 5.1 Work Power 5.2 Energy ...
previous page, all five joules of input work were transformed to five joules of output work. An engineer would say the machine was 100 percent efficient, because all the input work became output work and none was lost. How friction affects real machines In real machines, the work output is always less than the work input.
Work, Energy, and Power Name: Lesson 2 Work, Energy and ...
a. TME conserved b. TME increases c. TME decreases 7. A marble starts from rest and rolls down an inclined plane. Ignore friction. a. TME conserved b. TME increases c. TME decreases 8. A physics student runs up a flight of stairs at constant speed. a. TME conserved b. TME increases c. TME decreases 9. A baseball makes its flight through the air ...
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Work, Energy & Power AP Physics B. There are many different TYPES of Energy. Energy is expressed in JOULES (J) 4.19 J = 1 calorie Energy can be expressed more specifically by using the term WORK(W) Work = The Scalar Dot Product between Force and Displacement.
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Work, Energy and Power In this section of the Transport unit, we will look at the energy changes that take place when a force acts upon an object. Energy can’t be created or destroyed, it can only be changed from one type into another type. We call this rule conservation of energy. Work Work and energy are the same thing. When a force moves
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Example problems: Work & Power •Two soccer players work out in the off season by sprinting up a 40º hill for a distance of 100 m before stopping, resting, and walking back down. Mia has a mass of 60 kg. Julie has a mass of 65 kg. ... Microsoft PowerPoint - Work, Power, and Energy - Animation 98 Author:
Work, Energy & Power - bowlesphysics.com
Work, Energy & Power AP Physics B. There are many different TYPES of Energy. Energy is expressed in JOULES (J) 4.19 J = 1 calorie Energy can be expressed more specifically by using the term WORK(W) Work = The Scalar Dot Product between Force and Displacement. So that means if you apply a force on an object and it covers a displacement you have ...
Work, Power and Energy Worksheet
Calculate the work done by a 47 N force pushing a 0.025 kg pencil 0.25 m against a force of 23 N. 3. Calculate the work done by a 2.4 N force pushing a 400 g sandwich across a table 0.75 m wide.
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CHAPTER 16 WORK, ENERGY AND POWER EXERCISE 88, Page 201 ... Calculate the work done when a mass of weight 200 N is lifted vertically by a crane to a height of 100 m. ... The output power of a motor is 10 kW. How much work does it do in 1 minute? Power = workdone timetaken. from which,
Energy, Work, & Power - ntschools.org
4. A 25-gram paper cup falls from rest off the edge of a tabletop 0.90 meter above the floor. If the cup has 0.20 joule of kinetic energy when it hits the floor, what is the total amount of energy converted into internal (thermal) energy during the cup’s fall? (1) 0.02 J (2) 0.22 J (3) 2.2 J (4) 220 J 5.
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If you lift two loads up one story, how much work do you do compared to lifting just one load up ... How much work is done on a 60-N box of boo ks that you carry horizontally across a 6-m room? ... a. 0 J b. 1 J c. 2 J d. 20 J e. 40 J ____ 27. How much power is expended if you lift a 6 0 N crate 10 meters in 1 second? a. 0 W b. 6 W c. 10 W d. ...
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Work, Power & Energy Study Guide What is the formula for Work? _____ What unit is Work measured in? _____ What is the formula for Kinetic Energy? ... kinetic energy of block A what is the kinetic energy of block B? 18. A 0.20-kilogram hail dropped vertically from a height of 7.00 meter above the floor bounces hack to a
Work, Power and Energy Problems - slesinskiphysics2.com
4. An ideal gas expands isothermally, performing 4.40 x 103 J of work in the process. a) What is the change in internal energy of the gas? b) How much heat is absorbed during this expansion? 5. An ideal gas has its pressure cut in half slowly, while being kept in a container with rigid walls. In the process, 265 kJ of heat left the gas.
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Work, Power, and Energy Webquest Worksheet Work ... Draw and label a picture with force and distance to support your answer. Power ... takes them 80 sec to move from the bottom of the plane to the top of it, what is the power if they did 1600 J of work? Imagine a team of horses pulling a plow. If they pull the plow a distance of 100 meters in
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Work-Energy Bar Charts Read from Lesson 2 of the Work, Energy and Power chapter at The Physics Classroom: ... of physical situations is a work-energy bar chart. A work-energy bar chart represents the amount of energy present in a system by means of a vertical bar. The length of a bar is representative of the amount
Study Lesson 2 Work, Energy and Power chapter at The ...
Work-Energy Calculations Study Lesson 2 of the Work, ... For the following questions, begin with the work-energy equation, cancel terms, substitute and solve. 1. A glider is gliding through the air at a height of 416 meters with a speed of 45.2 m/s. The glider dives to a height of 278 meters. Determine the glider's new speed.
Name: Date: Physics I H Mr. Tiesler Work, Power & Energy ...
22.) A spring with k=53 N/m hangs vertically next to a ruler. The end of the spring is next to the 15 cm mark on the ruler. If a 2.5 kg mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks? 23.) A novice skier, starting from rest, slides down a frictionless 35.0º incline whose vertical
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1. The force acting on a particle varies as in the Figure below (The axis is marked in increments of 5.00 m.) x Find the work done by the force as the particle moves across the following distance from = 0 m to . x x = 60.0 m. (90 J) 2. A 2.5 kg object is subject to a force F x that varies with position as in the Figure below. What is the total work
Physics Notes Class 11 CHAPTER 6 WORK, ENERGY AND POWER
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Physics Classroom 2009 Answer Key - Answers Fanatic the physics classroom 2009 series circuits answers - Nov 16, 2009Â Â· This blog is intended to provide teachers with quality links for teaching science that will help to engage pupils in the classroom.The Physics Classroom 2009 Answer Key -
Physics Practice Problems: Work and Energy
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Work, Power & Energy Study Guide What is the formula for Work? _____ What unit is Work measured in? ... Block A has a mass of "m" and block B has a mass of 3"m." Block A has a velocity of 4"v" and block B has a velocity of "v." Compared to the kinetic energy of block A what is the kinetic energy of block B? 18. A 0.20-kilogram hail dropped ...
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The Safe Work Permit Practice is implemented by the Permit Authority, the individual(s) who have been assigned the responsibility for Safe Work Permitting within the function. The following are identified areas or activities that are exempt from the scope of the Safe Work Permit Practice: 1.
Work-Energy Theorem Practice Problems - Denton ISD
Work-Energy Theorem Practice Problems 1. A squirrel (mass 0.9 kg) is running across the road at a speed 4.0 m/s. What is the ... What is the bird’s kinetic energy after running into the window? c. How much work does the window do on the bird? 4. A spider monkey (mass 40 kg) is frolicking through the jungle at a speed of 3.0 m/s. ...
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Work and the Work/Kinetic Energy Theorem Potential Energy. ... The definition of work W =F Δx corresponds to the intuitive idea of effort: • More massive object will require more work to get to the same ... Use the work-kinetic energy theorem: x v = 10 m/s m = 25 kg k = 3000 N/m
Electstatic and Circuits Test SY16-17 - McKinney ISD
= - 90 nC, and all the other quantities are accurate to two signiﬁcant ﬁgures. What is the magnitude of the net ... What is the potential drop from point A to point B for the circuit shown in the ﬁgure? The battery is ideal, and all the numbers are accurate to two signiﬁcant ﬁgures. A) 2.5 V B) 3.0 V C) 0.35 V D) 2.0 V ...
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Chapter 14 Work, Power, and Machines 14.1 Work and Power Work is the product of force and distance. You can calculate work by multiplying the force exerted on the object times the distance the object moves. Work = Force x Distance; W = Fd Work is done when a force moves an object over a distance. No work is done if an object does not move or if the force you apply is not in the same direction an
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Section 14.2 Work and Machines (pages 417–420) This section describes how machines change forces to make work easier to do. Input forces exerted on and output forces exerted by machines are identified and input work and output work are discussed. Reading Strategy (page 417) Summarizing As you read, complete the table for each machine.
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Work-Energy Theorem The kinetic energy is dened as K = 1 2 mv2 The work done by the net force on the system equals the change in kinetic energy of the system Wnet = Kf Ki = K This is known as the work-energy theorem Units of K and W are the same (joules) Note: when v is a constant, K = 0 and Wnet = 0, e.g. Uniform circular motion 3
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2. A 70. kg pole vaulter converts the kinetic energy of running at ground level into the potential energy needed to clear the crossbar at a height of 4.0 m above the ground. What is the minimum velocity that the pole vaulter must have when taking off from the ground in order to clear the bar? Answer: s 8.9m
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6 Example 20 •How much work is done (in kilojoules), and in which direction, as a result of the following reaction? w = -0.25kJ Expansion, system loses -0.25kJ Example 21 •The following reaction has ΔE = –186 kJ/mol. •Is the sign of PΔV positive or negative? •What is the sign and approximate magnitude of ΔH? Contraction, PΔV is negative, w is positive
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How much work does that force do over a distance of 6.0m? Determine if work is done in the following scenarios: A teacher applies a force to a wall and becomes exhausted. A book falls off a table and free falls to the ground. A waiter carries a tray full of meals above his head by one arm straight across the room at constant speed.
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2.29 A vertical spring stores 0.962 J in spring potential energy when a 3.0-kg mass is suspended from it. (a) By what multiplicative factor does the spring potential energy change if the mass attached to the spring is doubled? (b) Verify your answer to part (a) by calculating the spring potential energy when a 6.0-kg mass is attached to the spring.
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we"can"calculate"the"mass"of"food"required:" (3600 kcal)(0.35) 1260 kcal. (3600 kcal)(0.60) 2160 kcal; and (3600 kcal)(0.05) 180 kcal; fat carbohydrate protein = = = = = = E E E " Now,"from"Table"7.1"we"can"convert the"energy"required"into"the"mass"required" for"each"component of"their"diet:" 135.5 g. 9.3 kcal 1 g 2160 kcal 9.3 kcal 1 g 526.8 g ...
Kinetic Energy & The Work-Energy Theorem
Work-Energy Theorem The kinetic energy is dened as K = 1 2 mv2 The work done by the net force on the system equals the change in kinetic energy of the system Wnet = Kf Ki = K This is known as the work-energy theorem Units of K and W are the same (joules) Note: when v is a constant, K = 0 and Wnet = 0, e.g. Uniform circular motion 3
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