GEAS Exam1. A traffic officer uses a radar gun to clock a Ferrari at 131 mph. However, the actual speed of the car was at 127 mph. What is the percent error in the officer’s radar gun? a. 3.15% b. 4.55% c. 6.17% d. 8.55% 2. Which of the following is NOT a property of metals? a. Metals have more luster b. Metals have high electrical conductivity c. Metals are neither malleable nor ductile d. Metals have high thermal conductivity 3. During a 5-minute period, a man lifts 75 boxes, each with a mass of 25kg, from floor level to a height of 1.5m. At what average power in horsepower does the man work? a. 0.1 hp b. 0.2 hp c. 0.5 hp d. 1.0 hp 4. A mass of 8 kg is above a given datum, where local g is 9.70 m/s2. Calculate the gravitational force with respect to the datum? a. 77.6 N b. 78.5 N c. 79.1 N d. 79.5 N 5. An acid can react with a base to produce a ___. a. Salt b. Oxide c. Hydroxide d. Hydrogen gas 6. A 3.5 lb weight hangs at the end of a spring with k = 20 lb/ft. The weight is pulled slightly and released. Calculate at what frequency it will vibrate? a. 2.16 Hz b. 2.46 Hz c. 3.16 Hz d. 3.72 Hz 7. Friction force is ______ of area of contact. a. Dependent b. Inversely proportional c. Independent d. Proportional 8. What is the SI unit of temperature? 9. 10. 11. 12. 13. 14. 15. 16. a. Celsius b. Kelvin c. Fahrenheit d. Rankine Two persons both 132 lb stand 2 m apart. What is the gravitational attraction between them? a. 6x10-8 N b. 7x10-8 N c. 8x10-8 N d. 9x10-8 N In chemistry, who formulated the planetary model of the atom? a. JJ Thomson b. Pierre Curie c. Ernest Rutherford d. James Chadwick Atoms of the same element which have different masses are called ____. a. Molecules b. Ions c. Allotropes d. Isotopes What is the “identity” of an atom? a. Mass number b. Atomic number c. Atomic weight d. Atomic mass The mass of a neutron is approximately how many times greater than the mass of an electron? a. 1839 b. 1863 c. 1836 d. 1893 What are the rows in the periodic table called? a. Periods b. Transitions c. Groups d. Families What is the pressure of 7 kg of nitrogen gas confined to a volume of 0.4 cubic meters at 20 degrees Celsius? a. 15 atm b. 22 atm c. 29 atm d. 31 atm What is the most abundant element in the human body? a. Carbon 5 J c. 19. -113°C What is the component of the solution that is dissolved? a. Blood d. 4 d. 4. how many units of heat energy appeared? a. 6. Air c. 1 b. 56°C b.70 g of water a. per unit temperature gradient in a direction perpendicular to area? a. the valence ring contains how many electrons? a. 27. Solute c. Sublimation A brass plug has a diameter of 10 cm at 150°C.50 g c. Calcium What physical property of a material that refers to the rate of heat flow per unit time in a homogeneous material under steady-state conditions. Bulk modulus c.12 g Metals can be drawn into wires. 4.41 g or carbon dioxide and 2. 4. 5.1 J What is considered as the most common solution on earth? a. a. 25. -91°C b. Hydrogen c. Deposition c. Deposition d. 121. -98°C c.95 cm if the coefficient of thermal expansion is 19x10-6 for brass? a. 8 Determine the final temperature of a 150 g piece of glass at 24 degrees Celsius that absorbs 800 calories of heat. 2 c. Seawater b.17. Oxygen d. 78°C The density of water is maximum at what temperature in Celsius scale? a. Rigidity c. 29. Shear modulus b. 22. Malleability b. Water absorption In a selenium atom. 105. b. when exposed to sunlight.12 cal/g°C. 1 b. Thermal conductivity c.26 hp d. If all the energy of the block went into heat energy. This illustrates what property of metals? a. 71°C d. -103°C d. Condensation b. Vaporization d. 3 d.2 J d. Young’s modulus d. 20. per unit area.14 hp b. 23. 21. 5. Solvent b. Freshwater Which of the following is NOT an SI-derived unit? . 30. Ductility d. 26. 110. 4 What is another name for modulus of elasticity? a. 31. Vaporization What is the process of changing from solid state to gas state? a. 2. 98. Heat distortion temperature d.13 hp Calculate the mass of oxygen that reacts with 1. Colloid A 1000-gram metal block fell through a distance of 10m. 69°C c. Sublimation c. 18.25 g b.25 g of methane to form 3. 28.88 hp c. Specific heat capacity of glass = 0.1 J b. Condensation b. Plasticity What is the process of changing from gas state to liquid state? a. 1. At what temperature will the diameter be 9.86 g 24. Catalyst d. 2 c. d. Modulus of elasticity What is the power of an elevator which can lift a 100 kg mass a distance of 20 m in 5 seconds? a. Thermal expansion b. Potential energy c. 16. Force d. Watt The pressure of a gas is directly proportional to the Kelvin temperature.000 c. Pascal d.36 m/s c. 100 The English unit “slug” is a unit of ____. 22. Insulator d.2 kJ d. What is its efficiency? a. 1. 18. Impulse d.0 min. 33. 7. A 60-ohm electric lamp if left connected to a 240-volt line for 3. when it is subjected to a tension of 50 N? a. Which of the following has the characteristics of both metals and non-metals? a. Weight c. Kinetic energy d. 36. What is the maximum number of electrons that can be accommodated in the valence shell of an atom? .12 m/s 43. Lux Which of the following is equivalent to the unit “farad”? a.6% d.5 kcal d. How many calories are developed in 1 min in an electric heater which draws 5 A when connected to a 110-V line? a. 35. 8. Inertia c. Lumen b. Vector product c. A 1-hp motor is rated at 1kW.5 kJ b. 39. 10. Plus product What is a measure of the inertia of an object? a. Energy What is another term for a scalar product of two vectors? a. °C b.1 kJ c. Rest energy b. Boyle’s Law b. Coulomb/joule How many dynes are there in 1 N? a. 32.000 d. 100. How much energy is taken from the line? a. Weight 40. 9. a. Joule/volt b. 17. 73. Cross product b. 100 In physics.32. Mass d. 38. Mechanical energy 45. what is the unit of luminous intensity? a. Charle’s Law d. 71. Equilibrium 41.000 b.2% 47. 100. 37. Gay-Lussac’s Law c. Mass b. Candela c. Footcandle d. 1. 8. Dot product d. Metalloids c. 77. 74. 25. 18. 15. 1. 34.9 kcal b.23 m/s b. Density b.000.10 kg/m. Coulomb/volt d.9% b. a.1 kcal 44. How fast will pulses propagate along a string whose mass per unit length is 0.000 b.5% c. Conductors b. a.000 c.2 kcal c. Joule/coulomb c. Force c. Joules c. Ideal Gas Law The pressure of 1 bar is equivalent to how many Pascals? a. Momentum b.8 kJ 46. Semiconductor 42.66 m/s d.000 d. What is the energy something possesses by virtue of its mass? a. What is the property of matter which is the reluctance to change its state of rest or of uniform motion? a. 82 L c. Molarity c.6 m high in 28 s at constant velocity. What is the work done in a piston-cylinder system that contains 0. A sample of oxygen gas occupies a volume of 5.83 L b. a. Sound wave c. Ingredients b. 332 W An ordinary light bulb contains a fine tungsten wire that is heated to a high temperature by passing an electric current through it. 6 b. Energy c.2 kg. -44.00 L at 27°C. Find the pressure exerted by the gas in atm. 275 W c.691 . Shape d. Directly proportional b. 156 W 54.34. What is the radiated power of such light bulb? a. The speed of sound decreases with increasing temperature. a. 56.48. -51. 52. At this temperature.214 b. Catalyst What refers to the product of the force and the time during which a force acts? a.5 ft-lb d. Solvent c. Frequency 58. 184 W d. 216 W b. 49. what volume does it occupy at 77°C? a. Normality d. 8 d. The speed of sound increases with the increase of the gas density. Light wave d. 0.12 L d. Height c. The speed of sound in moist air is greater than in dry air. None of the above 57. Momentum What is defined as a value equal to the number of gram moles of solute per 1000 grams of solvent? a. If the person walks up a flight of stairs 12. Formality What is the kinetic energy of a 1-pound weight that has fallen 16 feet? a. Which of the following about the speed of sound is correct? a. If the pressure is unchanged.5 cu meter of air initially at 150 kPA and 50 degrees Celsius if the temperature remains constant while the volume is decreased to a quarter of the original volume? a. Molality b.1 kJ b. Independent of d. 50. Short wave 59. 132 W d. 10 c. Reactants d. 11. 16 ft-lb A person’s mass is 75. 6. 5. a. Power b.44 L 55.0 g of carbon dioxide occupy a volume of 10 L at a temperature of 350 K. 2 ft-lb b. Which one cannot travel in a vacuum? a. Impulse d. 53. 0. d. 4. 128 W c. c.3 kJ 60. What is the characteristic of a wave that is responsible for what we interpret as pitch? a. A typical filament has a surface area of about 1 cm2 (10-4 m2) and is heated to a temperature of approximately 3000 K. 51. what is the power output? a. -56. The velocity of sound is ___ to the pressure of a gas.1 kJ d. Inversely proportional c. Radio waves b. 6.1 kJ c. The speed of sound increases with the density of the medium. Amplitude b. 12 What is a substance that speeds up a chemical reaction without itself undergoing a chemical change? a. 64 W b. -49. 8 ft-lb c. 0. b. the emissivity of tungsten is 0. Downwards b. 600 J c. 386 d. Upwards c. 3000 J An object in equilibrium may not have: a. with mass 2 kg. 10 kPa A free particle. is initially at rest. 63. 2500 J d. Velocity d. A high-frequency sound has high pitch. 24. IF a force of 10 N is applied for a period of 10s. Principle of Transmissibility b. A high-frequency sound has low pitch. The color of the sky is really blue d. 65.452 The sky appears to be blue when the sun is high in the sky. a. Find the speed of the car at the top of the 20-m hill. c. 0. Red light is scattered more that blue b. 4123 J d.0 m/s A horizontal force of 5 N is required to maintain a velocity of 2 m/s for a box of mass 10 kg 67.1 m/s d. Kinetic energy c. 64.8 m. Continuity Law c.41°C. 62.718 d. 0. 3592 J b. 69. How much heat is conducted through the bar in 1 min? (thermal conductivity of copper is 381 J/ms°C) a. 144 b. 0.1 kPa b. 72. a.8 m/s c. 14. 73. Any force acting on it b. c. a. The car drives down into a valley whose deepest point is at a height of 10 m and then climbs to the top of a 20-m hill. Law of interaction c. sliding over a certain rough surface. Infinite d. In which medium do sound waves travel the fastest? . 500 J b. 4496 J Suppose you add 500 g of copper shot that has been heated in boiling water to 0. 412 A ball is projected upwards. 68. Why? a. Law of acceleration b. what kinetic energy is acquired by the particle? a. 66. the matter has minimum ____. 1 kPa c. water and the other fluids in large amounts A copper rod has a diameter of 4 cm and a length of 0. a. 800 J The effect of force upon a body is the same at every point in its line of action. 2000 J c.6 m/s b. Blue light is scattered more than the other colors c. How much work is done by the force in 1 minute? a. Potential energy d. b. Zero A roller coaster car with mass 200 kg is at the top of a 30 m hill and is moving with a speed of 4 m/s. Linearity Law d. what is the specific heat capacity of the copper in J/kg°C? a. A high-frequency sound has low pitch and low energy. 3881 J c. 21. 71. We allow the mixture to reach equilibrium and find that the temperature is 23. 5 kPa d. Law of inertia d. Volume b. 74. 70. A high-frequency sound has low energy. Pressure The third law of motion is also known as ____. Law of momentum Which of the following statements is TRUE? a. Fundamental Principle of Forces A pressure of 75 mm of Hg is equivalent to how many kPa? a. 18. Its acceleration at the highest point is ____ a. Acceleration At absolute zero temperature. d. Blue is the color of air. Assume that the car moves frictionlessly. Any torque acting on it c. One end of the rod is placed in boiling water and the other end is placed in an iced bath. 1500 J b.8 kg of water at 19°C. 700 J d. 251 c.61. Assuming no heat loss. Gasses c. a. d.5 ml b. Vacuum Calculate the number of mercury atoms in 1.5 g of ware at 25 degrees Celsius and 1 atm pressure? a. 78. 88. b. 5. 90. 82. Atomic mass c. Robert Boyle d. Plum-pudding c. b.5 ml c.0 ml What is the total number of electrons in the fourth level? a. Non-metals have high electron affinities. Solids d. Atomic radius Which of the following best describes a scientific law? a. 6. Color c. It implies something accurate. 2 b. 14. Mass number b.50 L of mercury.75. the less its _____. Find the period of oscillation? a. 1 b. 8. Brass d.6 g/ml) a. Charcoal What is the pH of 0. Non-metals are oxidizing agents What is the volume of 12. a. Inert gases d. Atomic number What is another term for noble gases? a. Weight c. 12. Lead c. Sodium chloride b. Taste d. The coefficient of expansion of gases varies at different temperature. Number of shells b. Liquids b. Planetary d. All solids have approximately the same coefficient of expansion d. Atomic weight d. Transuranic gases c. Who is the father of modern chemistry? a.5 ml d. 13.12x1025 atoms b. 89.12x1025 atoms d. Antoine Lavoisier c. 5. 6. It summarizes observed facts. a. Non-metals form positive ions. Length d. 32 Which of the following is NOT an intensive property of a material? a. 2 c. CFC gases A simple pendulum has a length of 60 ft. 13 d. 84. 81. Density Which of the following is a mixture? a. (Density is 13. b. All liquids have approximately the same coefficient of expansion c. Special gases b. Non-metals have negative oxidation number. c. 14 Which of the following statements is TRUE? a.100 M HCl? a. 76.55x1025 atoms c. 77. 79. 86. 80. 85. 25. c. John Dalton Which of the following is NOT a characteristic of non-metals? a. 87. Volume b. b.55x1025 atoms The easier atoms loses its electrons. Electronegativity d. 16 d. 8 c. Valence electrons c. Melting point 83.5 s . Surface Area Which of the following is NOT an extensive property of a material? a. Aristotle b. Orbital b. It describes and observes physical results. All gases have approximately the same coefficient of expansion How does Sir JJ Thomson call his model of an atom? a. It implies experimentation results d. Radioactive The ___ of an atom is the sum of the number of protons and neutrons in the nucleus of an atom. How long does it take to reach its maximum height? a.000 c. Euler’s ratio c. 2. 9. What refers to a pair of equal.5% A roller support in Engineering Mechanics has how many reactions? a.5% by mass an iron compound. 200 b. Natural force c. Steel has a modulus of elasticity that is equal to ___ MPa? a. opposite and parallel forces? a. Couple b. 1387 g c.1-kg block to a height of 2 m and simultaneously give it a velocity of 3 m/s? a. b. 1. 12. 2. Refractive index d.8 J c.2 s b.3% b.8 J d. 12.1% c. 1. 4. Accuracy c. 0 b. 1883 g d. 3 98. External force d. Moment c. 94. Relative accuracy A boy tosses a ball up along a y-axis with an initial speed of 12 m/s. 95. 2 d. 1911 g What is the ratio of the transverse strain to the corresponding axial strain in a body subjected to uniaxial stress? a. and the compound contains 69. Relative precision d.91.2 s How much work is required to raise a 0. Dielectric index A certain ore is made up of 17.9% iron.000 d. 1135 g b. All of the above 100. 96.5 s What refers to how closely individual measurements agree with each other? a. 1. 14. What refers to the force that holds part of the rigid body together? a. 93. 200. Precision b.4 s d. a.6 J Convert 2. Calculate the percentage of iron in the ore. Internal force b.000 . 2. 10. 92.0 s d.8 s c.2% d. Torque d. Concentrated force 99. 0. 97. 20. 9.5 s c. Poisson’s ratio b. a. 11. 1 c.5 lb to grams.4 J b. 4.