Conceptual Physics (12th Edition)

Chapter 7

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During the time of energy transformation. ; One ... more

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Work ; Work is said to be done, if the applied ... more

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A person moving on a straight line with a load on ... more

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Work done in both the cases  are equal. ; ... more

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Energy ; The work is said to be done on an object ... more

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Power is the efficiency of work done.Power of the ... more

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Potential energy also doubles. ; Potential energy ... more

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The potential energy gain of heavier car is twice ... more

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When it does work or is converted into another ... more

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The new kinetic energy is four times the previous ... more

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Work done by the brake is equal to four times that... more

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300 J ; Work energy theorem states that the gain ... more

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Friction will not depend on the speed. ; ... more

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10 kJ ; According to the law of conservation of ... more

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The initial potential energy transforms into ... more

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Thermonuclear fusion ; At the deep interior of the... more

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Recycled energy is the process of utilization of ... more

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A machine can multiply input force and input ... more

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 Distance is reduced to one fourth. ; According to... more

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150 N ; The expression connecting input distance, ... more

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100 % ; Efficiency of a system is the measure of ... more

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60 % ; Efficiency is the ratio of the energy ... more

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Solar energy. ; Photosynthesis is the phenomenon ... more

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Consequence of Nuclear power inside earth's ... more

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Hydrogen is not a new source of energy. The ... more

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After shaking, temperature will increase. The ... more

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Tennis ball bounces back to a height, because it ... more

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6 J ; Work done is the product of applied force ... more

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The work done by the force, F=2.0 N  to move an ... more

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70 J ; Work done is the product of the force and ... more

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1100 J ; Gain in the potential energy is equal to ... more

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Power P is the ratio of work done W to the time ... more

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To find the power, use the formula : where the ... more

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The formula for the gravitational potential energy... more

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To show that the potential energy of the boulder ... more

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To find the kinetic energy KE, use the expression... more

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4200 J ; Kinetic energy is the energy possessed by... more

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Work energy theorem states the amount of work done... more

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Work done is equal to the change in kinetic energy... more

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The expression for efficiency is given by , where... more

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18000 J ; The force acting on R is equal to its ... more

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135 m ; Mass of the C and force applied is the ... more

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9000 J ; The two forms of energy involved in the ... more

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The equation connecting input distance d1 and ... more

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To show that the output force is 200 N, substitute... more

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Thus it is proved that force required to lift the ... more

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1000 N ; According to conservation of energy the ... more

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100 W ; To find the work done W use the formula... more

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 The velocity is calculated by equating the ... more

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A, B=C ; The tension in the string is equal the ... more

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Kinetic energy of the heavier truck is higher than... more

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There is no displacement along the gravitational ... more

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Work done by the friend.The extra work done by the... more

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As the internal muscles in a person's body are ... more

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Stretching a strong spring, work done not only ... more

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 work done by A and B is the same. However, the ... more

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The expression for work is a good estimate for ... more

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Velocity will be high ; More is the length more ... more

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Agree. ; Kinetic energy is directly proportional ... more

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With respect to the observer standing inside the ... more

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Both are correct, according to the person who is ... more

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The energy gets converted into thermal energy. ; ... more

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Flexible poles are elastic and is capable of ... more

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Kinetic energy is maximum at the lowest position ... more

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When the instructor applies a slight push, this ... more

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The space station has both potential and kinetic ... more

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Speed remains constant ; According to the work ... more

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Four times of the original depthNine times of the ... more

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The direction of motion of the ball and force is ... more

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For the cart rolling down the hill, the cart's ... more

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Work done by the thread is zeroWork done by the ... more

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No, as applied force and the displacement are ... more

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Heat energy, 100 J ; The total energy of an ... more

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No, its not possible. ; According to the law of ... more

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Some of the kinetic energy of the ball converts ... more

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When the object is thrown kinetic energy is ... more

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Potential energy will be maximum and kinetic ... more

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As long as the first one is highest, the height of... more

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By increasing the input distance the input work ... more

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E=mc2 ; According to the physicist AE  the energy ... more

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Both momentum and kinetic energy will double. ; ... more

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Kinetic energy increases by four times.Momentum ... more

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Momentum is same for bothMass of 1 kg will have ... more

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No ; Since the kinetic energy is the same in both ... more

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The momentum will be equal to zero. ; Every moving... more

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Kinetic energy will be equal to zero. ; If an ... more

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No, because kinetic energy is proportional to the ... more

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Momentum is conservedKinetic energy is not ... more

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Compared to the metal and bolt, paper is soft. ... more

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No, according to the law of conservation of energy... more

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No heat exhaust, vibration, and engine warming.No ... more

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Law of conservation of energy ; According to the ... more

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If a person uses more energy than the food ... more

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If an energy is used it is transformed into ... more

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International Peace: As the world is proceeding ... more

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Speed of the balls at the end of the track will be... more

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Energy required for the lights is taking from the ... more

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It slides to stop.The motion is a to and fro ... more

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Solar energy is the energy radiated from the sun ... more

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Ball P will move at a higher speed than ball G. ... more

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The vehicles will experience more air drag in the ... more

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Greater output work can't be produced but by using... more

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It is impossible to create energy, it can only be ... more

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The time taken for the interaction of the weight ... more

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Work done on an object depends upon the applied ... more

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With less kinetic energyDoes not violate the law ... more

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Speed of the both objects before striking the ... more

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The tension developed in the string attached to ... more

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Electrical energy is providing remaining 15 ... more

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Potential energy gets converted into heat energy... more

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20 km/h to 30 km/h ; The expression for change in ... more

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For a closed system, the system's kinetic energy ... more

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The component of force acting on the object ... more

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Tension force do not work because there direction ... more

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The centripetal force needed for the satellite to ... more

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When the one ball is pop out with twice the speed... more

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The total energy of the universe always remains ... more

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Power crisis, Because the company is not able to ... more

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