Review for Test on Work Power and Energy April 19, 2022 Post a Comment one. Piece of work is defined every bit Force per unit time Force over a distance Force per unit of measurement distance None of the above 2. What are the units of work? Newtons Watts Joules None of the above 3. What is the sign of the piece of work washed by gravity on a homo standing on a platform? Nothing Positive Negative Depends on the particular situation iv. A force of 10 Northward works on a ball over a distance of 5 k. The forcefulness is parallel to the displacement of the brawl. What is the total work done by the force? -fifty Due north 0 Northward 2 Northward 50 N 5. A force of 10 N works on a ball over a distance of v m. The force is perpendicular to the deportation of the ball. What is the total work washed past the force? -50 Due north 0 N 2 N fifty Due north six. A force of 10 North works on a ball over a altitude of 5 one thousand. The force is antiparallel to the deportation of the ball. What is the full work done by the forcefulness? -fifty N 0 N 2 Due north l N 7. The piece of work done past a given force over a given altitude is proportional to The velocity of the particle The sine of the angle betwixt the force and the displacement The cosine of the angel betwixt the force and the displacement The time during which the force acts 8. What is the sign of the work performed on an object in uniform circular motion? Nil Positive Negative Depends on the particular situation ix. How much work is performed past gravity on an object of mass m in free autumn over a distance of h meters? mh mg/h mgh mh/one thousand x. A force of 1 Northward, parallel to the displacement of the object, acts on an object over a distance of 1 chiliad. How much work is done? ane Joule 1 Watt ii Joules two Watts 11. How is work related to dispatch? Westward = ma W = mat W = max Due west = ma/x 12. A constant force of 10 N causes a box to motion at a constant speed of 2 thousand/s. How much work is done in 10 seconds? 200 J 50 J 10 J 2 J xiii. A mass is kept stationary past an external force. All of the following are true EXCEPT: The point of application of the force does not move No piece of work is done on the mass There is no net strength on the mass The external strength may perform work on the mass xiv. What is the magnitude of the work done by a forcefulness acting on a particle instantaneously? Zero Positive Negative Depends on the particular situation 15. How is work defined in terms of integrals? W = v(10)dx W = a(x)dx W = F(10)(x)dx W = F(x)dx 16. Free energy is measured in the aforementioned units as Power Force Work None of the above 17. Kinetic free energy is proportional to v two v a Piece of work 18. A forcefulness of two N acts parallel to the displacement of a particle for a altitude of 10 grand. What is the kinetic energy of the particle? five J 20 J 12 J Not enough information 19. A force of 2 N acts parallel to the displacement of a particle for a distance of 10 m. What is the change in the kinetic energy of the particle? v J 20 J 12 J Not plenty information xx. According to the work-energy theorem, a cyberspace piece of work causes A modify in kinetic energy A change in potential energy A kinetic energy A alter in the management of motion of a particle 21. A particle of mass i kg experiences a internet work of 100 North. what is the alter in kinetic energy of the particle? 0 J 10 J 100 J Not plenty information 22. A particle of mass ane kg experiences a net piece of work of 100 N. what is the modify in the velocity of the particle? 0 10 grand/s 100 m/s Not enough data 23. An object falls a distance of h meters. What is the increase in the object's velocity over this distance? gh mgh 24. What can be said most the kinetic energy of an object in uniform circular motion? It is constantly increasing It is constantly decreasing Information technology is constant Its direction is irresolute, but its magnitude is constant 25. Kinetic free energy is A scalar Dimensionless A vector None of the above 26. Power is divers as Work per unit length Force per unit of measurement length Work times time Work per unit fourth dimension 27. The units of power are divers equally Joules Newtons Joules per meter Watts 28. A constant strength acting over a given altitude requires Abiding Power Increasing Power Decreasing Power Not enough information 29. In a period of ten seconds, an lift lifts a weight of k Northward a distance of 10 one thousand at constant velocity. What is the average power of the elevator over this fourth dimension? 10000 Due west 100 W 1000 Westward 0 W 30. At a given point, a force of twenty Due north acts on a particle with velocity of 5 m/s what is the power exerted by the force? four W 100 Due west 20 W five W 31. How many principles of conservative forces are there? ane 2 three 4 32. Which of the following is NOT a conservative force? Gravity Leap force Normal force from a pendulum Frictional force 33. The work washed by a conservative force over a airtight loop is always Positive Negative Zero None of the higher up 34. The work washed past friction over whatsoever distance is ever Positive Negative Cipher None of the above 35. Path independence for bourgeois forces ways that The piece of work done over any path is the same No net work is washed over any path A force of abiding magnitude acts over any path The same work is done over any path between two given points 36. Bourgeois forces always Conserve speed Conserve mechanical energy Conserve kinetic free energy Conserve position 37. Potential energy is divers for Nonconservative forces Conservative forces Abiding velocity A force that always does zero cyberspace piece of work 38. The potential energy is ever the same for an object with the same Velocity Speed Acceleration Position 39. Potential energy is defined as Energy of motion Energy of configuration Total mechanical free energy Free energy of acceleration 40. In what way is potential energy related to piece of work? ΔU = W U = W U = - W ΔU = - West 41. The sum of potential and kinetic energy is always Zero Positive Negative None of the above 42. The sum of the alter in kinetic and potential energy is always Cipher Positive Negative None of the above 43. Total mechanical energy is defined as Kinetic free energy Potential energy The sum of the kinetic and potential free energy The sum of the change of the kinetic and potential energy 44. The potential energy of gravity is defined equally mg mg/h mgh g/h 45. The change in potential energy is always equal to the The change in kinetic energy The change in mechanical energy The change in position The negative of the change in kinetic free energy 46. A mass m is allowed to driblet from a height h. What it its velocity when it reaches the basis? mgh 47. What is the total mechanical energy of a mass of 2 kg aquiver on a bound given that the maximum velocity of the mass is 5 m/s and the spring constant is 50 N/g? 10 J 25 J l J 124.five J 48. At what point in the oscillation of a jump is the kinetic energy maximum? At its equilibrium point At its maximum displacement When the spring is well-nigh compressed When the spring is virtually extended 49. What is the symbol for full mechical free energy? U East Thou F fifty. How is potential free energy divers in terms of a position dependent force? U = - F(x) ΔU = - F(ten) ΔU = - F(x)dx U = - F(x)dx hayesthiskence.blogspot.com Source: https://www.sparknotes.com/physics/workenergypower/review/quiz/ Share You may like these postsBuying Bedroom DecorationWhat Is Insurance Company Address of Anthem Blue Cross in LaAssisted Living the Musical the Home for the HolidaysGold Coast Holiday Homes Coolangatta Post a Comment for "Review for Test on Work Power and Energy"
Post a Comment for "Review for Test on Work Power and Energy"