FINAL EXAMINATION PHYSICS 1

Name: ____________________________________ Date of Examination: ______________________

Block Section:_____________________________ Instructor: _________________________________

General Instructions:

1. Fill up all information required in the questionnaire and answer sheet. 2. Use the back sheet of the questionnaire for all pertinent solutions.3. In the answer sheet provided, write the letter of the correct answer.4. If you wish to change your answer, mark an “X” to the previous answer then proceed to instruction #3.5. Strictly NO CHEATING. Any form of cheating will be dealt with accordingly.

GOOD LUCK !!!!!!

1. An object at rest may haveA. velocity B. momentumC. kinetic energy D. potential energy

2. An object in motion need NOT have A. velocity B. momentum

C. kinetic energy D. potential energy 3. An object that has momentum must also have

A. acceleration B. impulseC. kinetic energy D. potential energy

4. Momentum is most closely related toA. kinetic energy B. potential energy C. impulse D. power

5. When the velocity of a moving object is doubled ?

A. its acceleration is doubled B. its momentum is doubledC. its kinetic energy is doubled D. its potential energy is doubled

6. What never changes when two or more object collide is

A. the momentum of each one B. the kinetic energy of each one C. the total momentum of all the objects D. the total kinetic energy of all the objects

7. The average momentum of a 70 kg runner who covers 400 m in 50 s is

A. 8.75 kg.m/s B. 57 kg.m/sC. 560 kg.m/s D. 5488 kg.m/s

8. Fluid at rest at the bottom of a container is

A. under less pressure than the fluid at the topB. under the same pressure as the fluid at the topC. under more pressure than the fluid at the topD. any of the above, depending on the circumstances

9. A momentum can be expressed inA. N/s B. N.sC. N.m D. N . m/s

10. The pressure at the bottom of a vessel filled with liquid does not depend on the

A. acceleration of gravity B. liquid density

C. height of the liquid D. area of the liquid surface

11. In order for an object to sink when placed in water, its specific gravity (relative density) must be

A. less than 1 B. equal to 1 C. more than 1 D. any of the above, depending on its

shape

12. A cake of soap placed in a bathtub of water sinks. The buoyant force on the soap is

A. zero B. less than its weight C. equal to its weight D. more than its weight

13. A wooden board 2.0 m long, 30 cm wide, and 40 mm thick floats in water with 10 mm of its thickness above the surface. The mass of the board is

A. 1.8 kg B. 18 kg C. 24 kg D. 176 kg

14. An aquarium tank 25 cm long and 15 cm wide contains water 10 cm deep but no fish. The gauge pressure on its bottom is

A. 0.98 Pa B. 98 Pa C. 0.98 KPa D. 9.8 KPa

15. If the tank if Multiple Choice15 contained fish as well as water, with the water depth the same 10 cm, the pressure at the bottom would be

A. greater B. the sameC. smaller D. any of the above, depending on the total mass of the fish

16. The _________ of a liquid refers to the tendency of its surface to contract to the minimum possible area in any situation

A. surface tension B. buoyancy C. density D. pressure

17. Which of the following units could be associated with a vector quantity ?

A. km/s2 B. kg/s C. hours D. m3

18. Fred walks 8 km north and then 6 km in a direction 300 north of east. His resultant displacement from his starting point is

A. 11 km B. 12 km C. 13 km D. 14 km

19. Is referred to as the Newton’s Third Law of Motion

A. law of acceleration B. law of action and reaction C. law of inertia D. law of gravity

20. A women whose weight is 500 N is standing on the ground. The force the ground exerts on her is

A. less than 500 N B. equal to 500 N C. more than 500 N D. any of the above, depending on her location on the earth’s surface

21. The direction of the normal force is always

A. parallel to the surface B. perpendicular to the surface C. at a certain angle of inclination to the surface D. same direction as the weight

22. The weight of 600 g object is

A. 0.061 N B. 61 N C. 5.9 N D. 5.9 kN

23. A net force of 1.0 N acts on a 2.0-kg object, initially at rest, for 2.0s. The distance the object moves during that time is

A. 0.5 m B. 1.0 mC. 2.0 m D. 4.0 m

24. A force of 300 lb slows down a wagon from 60 ft/s to 20 ft/s in 10 s. The wagon’s weight is

A. 75 lb B. 300 lb C. 1200 lb D. 2400 lb

25. Which of the following is not a unit of power ?

A. joule - second B. watt C. newton-meter per second D. horsepower

26. The work done in lifting 30 kg of bricks to a height of 20 m on a building under construction is

A. 61 J B. 600 J C. 2940 J D. 5880 J

27. A 1.0- N weight has a kinetic energy of 1.0 J when its speed is

A. 0.45 m/s B. 1.0 m/s C. 1.4 m/s D. 4.4 m/s

28. A 60 kg woman whose average power is 30 W can climb a mountain 2.0 km high in

A. 1.0 h B 1.1 h C. 5.4 h D. 11 h

29. A 1.0 kg mass has a potential energy of 1.0 J relative to the ground when it is at a height of

A. 0.10 m B. 1.0 m C. 9.8 m D. 32 m

30. Is the amount of heat required to change the temperature of 1 kg of the substance by 10C?t

A. specific heat capacity B. heat of fusion C. heat of vaporization D. heat of sublimation

31. If 10.0 kg of ice at 00C is added to 2.0 kg of steam at 1000C, the temperature of the resulting mixture is

A. 00C B. 230C C. 280C D. 400C

32. When a vapor condenses into a liquid

A. it absorbs heat B. it evolves heat C. its temperature rises D. its temperature drops

33. A ball is thrown at a 400 angle below the horizontal at 8.0 m/s. After 0.40 s the horizontal component of its velocity will be

A. 5.1 m/s B. 6.1 m/s C. 6.7 m/s D. 10.4 m/s

34. After 0.40 s the magnitude of the vertical component of the ball of Multiple Choice 33 is

A. 3.9 m/s B. 5.1 m/s C. 9.1 m/s D. 10.0 m/s

35. In projectile flight, the horizontal component of velocity _________ in the absence of air resistance.

A. is always constant B. increases with height C. decreases with height D. is always zero

36. A ball is thrown at a 300 angle above the horizontal with a speed of 10ft/s. After 0.50 s the horizontal component of its velocity will be

A. 9 ft/s B. 10 ft/s C. 12 ft/s D. 19 ft/s

37. A stone is dropped from a cliff. After it has fallen 30m, its velocity is

A. 17 m/s B. 24 m/s C. 44 m/s D. 588 m/s

38. A ball thrown vertically upward at 80 ft/s continues to rise for approximately

A. 2.5 s B. 5 s C. 7.5 s D. 10 s

39. How much heat must be removed from 14 lb of aluminum in order to cool it from 800F to 150F, the specific heat capacity of aluminum is 0.22 Btu/lb OF.?

A. –356 lb B. -502 lb C. –200 lb D. none of the above

40. If 0.20 kg of coffee at 900C is poured into a 0.30 kg cup at 200C, and we assume that no heat is transferred to or from the outside, what is the final temperature of the coffee ?

A. 850C B. 740C C. 920C D. 600C

41. The _________ of a substance is the amount of heat needed to turn 1 kg of the substance at its melting point from the solid to the liquid state.

A. heat of sublimation B. heat of vaporization C. heat of fusion D. heat capacity

42. A double walled vessel use in measurement of heats of reaction in calorimetric experiments

A. thermocouple B. flask C. erlen mayer flask D. calorimeter

43. __________ is the change in length per unit length per degree rise in temperature

A. coefficient of volume expansion B. coefficient of linear expansion

C. heat of expansion D. heat of contraction 44. A 2 m long aluminum pipe at 270C is heated until it is 2.0024 m at 770C. What is the coefficient of linear expansion of aluminum.

A. 3.4 x 10 –6 / 0C B. 6.75 x 10 –5 / 0C C. 2.4 x 10 –5 / 0C D. 2.0 x 10 –4 / 0C

45. A device for measuring very high temperature

A. calorimeter B. anemometer C. pyrometer D. thermometer

46. The temperature of an object is raised by 500C. This is equivalent to an increase in its absolute temperature of

A. 28 K B. 90 K C. 323 K D. 50 K

47. The heat that is being added to a substance at melting point or boiling point without change in temperature

A. heat capacity B. latent heat C. heat of vaporization D. heat of fusion

48. The heat of vaporization of water at 1 atm

A. 450 cal / g B. 540 cal/gC. 510 cal/g D. 480 cal/g

49. The temperature at which a substance changes from solid to liquid

A. boiling point B. freezing point C. melting point D. sublimation point

50. A 30 g ice cubes at 00C is dropped into a 200 g of water at 300C. What is the final temperature

A. 15.650C B. 12.250C C. 25.650C D. 200C

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