Course Name: Physics 2 Student: Devin Vega Course ID: SCIH036058 ID: H56683935 Submittal: 51 Progress Test 1 This Progress Test covers the course materials that were assigned in Units 1 and 2. Although the progress test is similar in style to the unit evaluations, the progress test is a closed-book, proctored test. You may not have access to notes or any of the course materials while you are taking the test. It is important that you do your own work. Select the response that best completes the statement or answers the question. You may use your calculator or scratch paper to work out solutions. ____ 1. Two identical blocks of iron, one at 10 degrees C and the other at 20 degrees C, are put in contact. Suppose the cooler block cools to 5 degrees C and the warmer block warms to 25 degrees C. This would violate a. b. c. ____ 2. The law of conservation of energy when applied to thermal systems is known as a. b. c. ____ 3. more than 1 m less than 1 m 1m What is the brightest portion of the spectrum of sunlight? a. b. c. ____ 6. the length of the string. the mass of the pendulum. the acceleration of gravity. What is the wavelength of an electromagnetic wave that has a frequency of 1million hertz? a. b. c. ____ 5. the first law of thermodynamics. the second law of thermodynamics. the third law of thermodynamics. Which of the following does NOT affect the period of a pendulum? a. b. c. ____ 4. the first law of thermodynamics. the second law of thermodynamics. both the first and second laws of thermodynamics. short wavelength, blue-violet light long wavelength, red light middle wavelength, yellow-green light The time needed for a wave to make one complete cycle is its a. b. c. frequency. velocity. period. ____ 7. 80 joules of heat is added to a system that performs 55 joules of work. The internal energy change of the system is a. b. c. ____ 8. A piece of iron (specific heat = 0.12 cal/g°C) and a cup of water both have the same temperature. If they are heated so that the internal energy of each doubles a. b. c. ____ 9. 0 J. 25 J. 135 J. both will have the same temperature. the water will have the higher temperature. the iron will have the higher temperature. Heat travels from the sun to the Earth by a. b. c. conduction. radiation. convection. ____ 10. Which of the following is NOT an example of increasing entropy? a. b. c. Gas molecules escaping from a bottle An unattended house breaking down A plant using energy from the sun to form new cells ____ 11. Antinodes are positions on a standing wave that have a. b. c. the minimum amplitude. the maximum amplitude. a random amplitude. ____ 12. The frequency of the second hand on a clock is a. b. c. 1/60 hertz. 1 hertz. 60 hertz. ____ 13. Which waves are examples of a longitudinal wave? a. b. c. waves in the strings of instruments light waves sound waves ____ 14. According to the following table, determine the source of sound that is 10 times louder than normal speech. a. b. c. old subway train busy street traffic jet engine at 30m ____ 15. The greater the difference in temperature between the input reservoir and output reservoir for a heat engine, a. b. c. the less the efficiency. the greater the efficiency. the faster the efficiency will increase or decrease. ____ 16. A skipper on a boat notices wave crests passing the anchor chain every 6.0 seconds. The skipper estimates the distance between crests at 30.0 m. What is the speed of the water waves? a. b. c. 5.0 m/s 6.0 m/s 30.0 m/s ____ 17. When water freezes it is correctly termed a “warming process” because a. b. c. when water freezes it gives off energy. when water freezes it absorbs energy. freezing can NOT correctly be called a warming process. ____ 18. The adiabatic form of the first law of thermodynamics can be described as a. b. c. energy out is greater than energy in. change in air temperature results in a change in pressure. energy in equals energy out plus work. ____ 19. List the types of waves in the electromagnetic spectrum in order from longest wavelength (at the left) to shortest wavelength (at the right). a. b. c. radio, micro, IR, visible, UV, X-rays, Gamma-rays radio, micro, UV, visible, IR, X-rays, Gamma-rays Gamma-rays, X-rays, UV, visible, IR, micro, radio ____ 20. A calorie is a. b. c. the amount of energy it takes to raise the temperature of 1 gram of water 1 degree Celsius. the same as 1000 Calories. a unit for measuring temperature. ____ 21. Which of the would most likely produce a wave? a. b. c. An object moving at a uniform velocity. An object moving at a uniform acceleration. An object moving in simple harmonic motion. ____ 22. A horse would be able to run faster if most of the mass in its legs were concentrated a. b. c. in the upper part, nearer the horse’s body. toward its feet. uniformly all along its legs. ____ 23. What happens when heat is added to a system? a. b. c. d. Much of it is destroyed immediately. It transforms into an equal amount of some other form of energy. Much of it is lost. It is used to overcome friction. ____ 24. As a fire truck speeds towards you, what is true of the frequency of the sound that you hear because of the Doppler Effect? a. b. c. The frequency is increasing, resulting in a higher pitch. The frequency is decreasing, resulting in a lower pitch. The frequency does not change but the wavelength does. ____ 25. When 4 grams of a substance loses 4 calories in cooling 1°C, its specific heat capacity is a. b. c. 1. 16. 9. ____ 26. A weight suspended from a spring bobs up and back down again over a distance of 3.00 meters in 10.00 seconds. Its frequency is a. b. c. 0.10 hertz. 3.0 hertz. 10.0 hertz. ____ 27. The primary purpose of polarized sunglasses is a. b. c. to block ultraviolet rays. to block infrared rays. to block glare from reflections. ____ 28. Radiation from the sun often gets trapped in Earth’s atmosphere because a. b. c. radiation from the sun comes in at an angle to Earth. long-wavelength radiation is absorbed by the atmosphere. the atmosphere allows only visible light to enter. ____ 29. A given volume of air has a temperature of 0 degrees Celsius. An equal volume of air that is twice as hot has a temperature of about a. b. c. 0 degrees C. 100 degrees C. 273 degrees C. ____ 30. A liquid boils when a. b. c. air molecules form a bubble and rise to the top of the liquid. it turns to vapor in, or at the bottom of, a liquid. trapped air in the liquid rises to the surface. ____ 31. What does it mean when waves are “out of phase” a. b. c. when crests overlap troughs to produce regions of zero amplitude. when crests of one wave overlap the crests of another wave. when crests overlap and effects add together. ____ 32. What happens when an airplane is flying faster than the speed of sound? a. b. c. It becomes very quiet inside the plane. A shock wave is produced. Nobody can hear the plane fly overhead. ____ 33. Consider the space in the center of a metal ring. If the ring is heated, the space becomes a. b. c. smaller. larger. depends on the material. ____ 34. The Doppler effect occurs when a source of sound moves a. b. c. away from you. toward you. either toward or away from you. ____ 35. The lowest theoretical temperature in nature is a. b. c. –273 degrees C. 4 K. 0 degrees C. ____ 36. Complementary colors are two colors that a. b. c. are next to each other on the color chart. produce white light when added together. look good together. ____ 37. Which, if they start out at the same temperature, will cool more slowly on a cold day? a. b. c. dry beans soup toast ____ 38. Internal energy is the a. b. c. average amount of energy contained in an object. amount of energy that is transferred from one object to another object. total amount of energy contained in an object. ____ 39. If you mix yellow and blue paint you get green paint. If you mix yellow and blue light you get a. b. c. white light green light black light ____ 40. The reason you can hold your fingers beside a candle flame without getting hurt is that a. b. c. air is a good heat conductor. hot air convection currents travel upward. air does not convect heat well. ____ 41. Which temperature scale labels the freezing point of water at 0 degrees? a. b. c. Celsius Kelvin Fahrenheit ____ 42. What kind of wave vibrates up and down as they travel left to right? a. b. c. both transverse and longitudinal transverse longitudinal ____ 43. During which process does liquid turn to vapor at the surface, and escapes, resulting in an overall lowering of the kinetic energy of the substance? a. b. c. evaporation boiling condensation ____ 44. Which of the following is NOT a transverse wave? a. b. c. light radio wave sound ____ 45. The second law of thermodynamics says that a. b. c. systems naturally progress to a state of greater entropy unless outside work is done to counter the natural progression. Systems that are left alone tend to move toward a state of less entropy. all natural systems tend toward increasing order. ____ 46. A sound wave that has a higher frequency has a wavelength that is a. b. c. shorter. longer. the same as the original. ____ 47. A sonic boom occurs a. b. c. just before an airplane reaches the speed of sound. just as an airplane reaches the speed of sound. anytime an airplane is traveling faster than the speed of sound. ____ 48. The energy transferred between objects because of a temperature difference is a. b. c. heat. internal energy. specific heat capacity. ____ 49. A leaf on a pond oscillates up and down two complete cycles each second as a water wave passes. What is the wave’s frequency? a. b. c. 0.5 hertz 2 hertz 4 hertz ____ 50. If you add a –10°C piece of ice to a 15°C glass of water, you might get water at a. b. c. -10°C 5°C 15°C Carefully review your answers on this progress test and make any corrections you feel are necessary. When you are satisfied that you have answered the questions to the best of your ability, transfer your answers to the online test submission page in the presence of your proctor. The University of Nebraska is an equal opportunity educator and employer. ©2018, The Board of Regents of the University of Nebraska. All rights reserved.
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