What is the speed of the object at point P1?

A) 1.1 m/s B) 2.5 m/s C) 3.1 m/s D) 3.4 m/s E) 4.1 m/s A) 1.1 m/s B) 2.5 m/s C) 3.1 m/s D) 3.4 m/s E) 4.1 m/s

Exam 7: Conservation of Energy

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The potential energy function for a conservative force acting in the x direction on a particle is shown below.The number of points where the net force on the particle is equal to zero are

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Question 21

Which of the following are units of mass?

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Question 22

A woman on a bicycle traveling at 10 m/s on a horizontal road stops pedaling as she starts up a hill inclined at 3.0º to the horizontal.If friction forces are ignored,how far up the hill does she travel before stopping?

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Question 23

The reference point for gravitational potential energy

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Question 24

The total mechanical energy of any system is

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Question 25

By what fraction does your mass increase when you and your car travel down the highway at 70 mph? Assume that the total mass of your car and occupant is 2000 kg.

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Question 26

Newtonian mechanics,compared to Einstein's Special Relativity is valid if

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Question 27

The binding energy of a deuteron is 2.22 MeV.This means that

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Question 28

A 5-kg blob of putty is dropped from a height of 10.0 m above the ground onto a light vertical spring the top of which is 5 m above the ground.If the spring constant k = 200 N/m and the blob compresses the spring by 1.50 m,then find the amount of energy lost in sound and thermal energy.

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Question 29

Assuming the incline to be frictionless and the zero of gravitational potential energy to be at the elevation of the horizontal line,

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Question 30

The rest mass of a proton is 1.67 $\times$ 10^-27 kg.From this information one can conclude that the rest energy of a proton is

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Question 31

A projectile of mass m is propelled from ground level with kinetic energy of 450 J.At the exact top of its trajectory,its kinetic energy is 250 J.To what height above the starting point does the projectile rise?

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Question 32

What is the speed of the object at point P₁?

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Question 33

Which of the following statements is true?

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Question 34

A proton has a rest mass of 938 MeV.From this information one can conclude that the rest mass of a proton is

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Question 35

In magazine car tests an important indicator of performance is the zero to 60 mph (0 to 96.6 km/h)acceleration time.A time below 6 s is considered to be extremely quick.If a car with mass 1300 kg were dropped vertically from a great height,how long would it take to go from zero to 60 mph and what would the magnitude of the change in gravitational potential energy be during this time? (neglect air resistance)

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Question 36

A mass m is released from a height 75 cm from the right-hand side of the track shown in the diagram at right.There is only friction acting on mass along the horizontal portion 30 cm either side of the midpoint O,with a kinetic coefficient of friction of $\mu$ _k = 0.4.Determine how high it reaches the second time it passes over to the left side,and in which direction is it moving when it stops? $A mass m is released from a height 75 cm from the right-hand side of the track shown in the diagram at right.There is only friction acting on mass along the horizontal portion 30 cm either side of the midpoint O,with a kinetic coefficient of friction of \mu <sub>k</sub> = 0.4.Determine how high it reaches the second time it passes over to the left side,and in which direction is it moving when it stops?$

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Question 37

Which of the following are units of energy?

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Question 38

The rest mass of an electron is 9.11 $\times$ 10^-31 kg.From this information one can conclude that the rest energy of an electron is

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Question 39

A body falls through the atmosphere (consider air resistance)gaining 20 J of kinetic energy.How much gravitational potential energy did it lose?

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Question 40

Showing 21 - 40 of 56

Exam 7: Conservation of Energy

The potential energy function for a conservative force acting in the x direction on a particle is shown below.The number of points where the net force on the particle is equal to zero are

Which of the following are units of mass?

A woman on a bicycle traveling at 10 m/s on a horizontal road stops pedaling as she starts up a hill inclined at 3.0º to the horizontal.If friction forces are ignored,how far up the hill does she travel before stopping?

The reference point for gravitational potential energy

The total mechanical energy of any system is

By what fraction does your mass increase when you and your car travel down the highway at 70 mph? Assume that the total mass of your car and occupant is 2000 kg.

Newtonian mechanics,compared to Einstein's Special Relativity is valid if

The binding energy of a deuteron is 2.22 MeV.This means that

A 5-kg blob of putty is dropped from a height of 10.0 m above the ground onto a light vertical spring the top of which is 5 m above the ground.If the spring constant k = 200 N/m and the blob compresses the spring by 1.50 m,then find the amount of energy lost in sound and thermal energy.

Assuming the incline to be frictionless and the zero of gravitational potential energy to be at the elevation of the horizontal line,

The rest mass of a proton is 1.67 ×\times× 10-27 kg.From this information one can conclude that the rest energy of a proton is

A projectile of mass m is propelled from ground level with kinetic energy of 450 J.At the exact top of its trajectory,its kinetic energy is 250 J.To what height above the starting point does the projectile rise?

What is the speed of the object at point P1?

Which of the following statements is true?

A proton has a rest mass of 938 MeV.From this information one can conclude that the rest mass of a proton is

Which of the following are units of energy?

The rest mass of an electron is 9.11 ×\times× 10-31 kg.From this information one can conclude that the rest energy of an electron is

A body falls through the atmosphere (consider air resistance)gaining 20 J of kinetic energy.How much gravitational potential energy did it lose?

Systems of Measurement

Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

The Electric Field I: Discrete Charge Distributions

The Electric Field Ii: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

The rest mass of a proton is 1.67 $\times$ 10^-27 kg.From this information one can conclude that the rest energy of a proton is

What is the speed of the object at point P₁?

The rest mass of an electron is 9.11 $\times$ 10^-31 kg.From this information one can conclude that the rest energy of an electron is