College Physics (11th Edition)

Chapter 8

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The formula to calculate the change in the kinetic... more

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240 N ; The component of the force in the ... more

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; Draw a free body diagram to show the direction ... more

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The tension force acts on the object at an angle ... more

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The Change in the kinetic energy is equal to , ... more

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Draw a free body diagram and show the force acting... more

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4400 NThe kinetic energy of the object does not ... more

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39900 N ; The weight of the tool can be determined... more

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Draw a diagram to plot the force versus ... more

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; From Hooke’s law, the formula to calculate the ... more

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123 m ; The initial kinetic energy of the object ... more

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; The total initial energy of the system is ... more

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When the object starts to move with a certain ... more

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The kinetic energy of the object is directly ... more

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Draw a diagram to show the direction of motion of ... more

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7.93 m/s ; The initial kinetic energy of the ... more

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; The formula to calculate the initial kinetic ... more

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0.156 m ; The formula to calculate the work done ... more

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-551 J ; The initial kinetic energy of the person... more

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The total mechanical energy of a system is equal ... more

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51 m/s ; The formula to calculate the total mass ... more

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0.603 cents ; The formula to calculate the total ... more

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The power transferred to the object by the ... more

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If the force is acting in the same direction as ... more

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Negative work means a mechanical energy loss for ... more

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The work done by the other forces apart from ... more

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In the conservation of energy law, indicates the ... more

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In the formula for the elastic potential energy ... more

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Yes, in the conservation formula of the energy the... more

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Mathematically, the elastic potential energy can ... more

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No.  ; Power and Energy are not the same. Energy ... more

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Conservation of mechanical energy applies only in ... more

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; The formula to calculate the energies of the ... more

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; The energy that is stored when a force is used ... more

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120 N/m ; The formula to calculate the energies of... more

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-0.1 J ; The formula to calculate the energies of ... more

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When the object is pushed across the rough ... more

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Yes. The work done depends on the force on the ... more

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The energy possessed by a body by the virtue of ... more

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Zero. ; The work energy theorem states that  ... more

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Zero. ; The spaceship moves in a circular orbit at... more

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The formula to calculate the maximum height ... more

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Less than . ; The force of kinetic friction starts... more

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No.The electric power produced by the engine(D) ... more

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Equal for all three. ; As the kid descends each ... more

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The energy can never be created nor destroyed and ... more

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The kinetic energy of an object is defined as ... more

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Yes.The kilowatt-hour is the commercial unit of ... more

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The increase in the elastic potential energy is ... more

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Zero. ; The formula to calculate the power ... more

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; The formula to calculate the increase in ... more

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; The density of the liquid is 0.994 g/mL and the... more

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32 hp ; The formula to calculate the resistance ... more

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The elastic potential energy is proportional to ... more

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The equation of motion for the vehicle traveling ... more

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The kinetic energy is proportional to the square ... more

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The friction is present, so the kinetic energy of... more

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The work done is equal to the change in the ... more

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The two springs have different spring constants ... more

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The formula to calculate the gravitational ... more

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The gravitational potential energy is proportional... more

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The energy stored is inversely proportional to the... more

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If there is no resistance, the potential energy of... more

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300 J ; Work done on an object is equal to the ... more

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-3.51 J3.51 J ; The force due to the ... more

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; The component of the tension in the cable is... more

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4.21 g ; The object’s initial kinetic energy is ... more

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74.2 J ; The initial kinetic energy is given by... more

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; The final kinetic energy is equal to , where ... more

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2.97 m/s ; Draw a free body diagram to show the ... more

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420 JFrom the person’s muscles. ; The term "... more

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0.6 m1.3 m ; The speed of the object(B) at a ... more

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.No ; The of the energy is converted into ... more

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jumps in 37 minNo ; The of the available energy ... more

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44.3 m/s ; The object is in free fall as it comes ... more

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. ; The stored elastic potential energy of the ... more

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7.38 cm ; An isolated system's energy will be ... more

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127 J The energy appears as heat energy. ; The ... more

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108 J The energy appears as heat energy. ; The ... more

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0.233 J ; The potential energy of the object is ... more

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5.2 m/s ; Assume 1 be the starting point and 2 be ... more

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  ; The work energy theorem is given by the ... more

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274 s.No ; The object is in free fall when it ... more

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; The tension in the rope is equal to the force ... more

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743 W ; The formula to calculate the power ... more

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28 ; Power is the rate of work done by an object. ... more

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314 W ; Make a free body diagram to show all the ... more

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0.20 W ; The formula to calculate the work done is... more

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0.23 ; The formula to calculate the rate at which ... more

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1.83 m/s ; There are no external forces that act ... more

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51 m ; The work energy theorem is given by the ... more

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390 W ; The formula to calculate the kinetic ... more

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1.3 m ; The difference between the initial and ... more

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224 kJ/min ; The work done must be against the ... more

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0.28 m ; The potential energy of a spring is given... more

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10 m/s ; The formula to calculate the energy ... more

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; The elastic and gravitational potential ... more

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50.0 m ; The free body diagram, at the top of the ... more

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; Only 70% of energy is applied to push the ... more

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8.61 m ; The gravitational potential energy is ... more

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If the person is walking 1 km in one hour then the... more

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To climb a wall the person requires more power ... more

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9Option (d) is the correct. ; The expression of ... more

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If the displacement is, the force must be . ; If ... more

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According to Hooke's law, the force required for ... more

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Convert into SI units.For displacement , take ... more

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Power is defined as , where is force and is ... more

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