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TEST on Electricity on May 21, 2014

TEST on Electricity on May 21, 2014. Read ch. 20- and the Handouts. May 14, 2014 IV w-up #8. Why/ or why not? ___________________________________________________________________________________________________________. May 9, 2014 IV w-up #7.

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TEST on Electricity on May 21, 2014

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  1. TEST on Electricity on May 21, 2014 Read ch. 20- and the Handouts

  2. May 14, 2014IV w-up #8 • Why/ or why not? ___________________________________________________________________________________________________________

  3. May 9, 2014IV w-up #7 1. A positive 6.0 x 10-9 C charge experiences a force of 1.8 x 10-5 N to the right. What is the electric field at location of that charge from other charges?

  4. May 8, 2014IV- W-up # 6 1. A negative charge of -3.0 x 10-6 C and a positive charge of 4.0 x 10-6 C are separated by a distance of 3 mm. What is the force on the negative charge? (magnitude and direction)

  5. May 1, 2014IV- W-up # 6 Balloons X, Y and Z are suspended from strings as shown below. Negatively-charged balloon X attracts balloon Y and repels balloon Z. Balloon Y ____. List all that apply in alphabetical order with no spaces between letters. a. must be positively-charged b. must be negatively-charged c. must be neutral d. may be either positively- charged or neutral • e. may be either negatively-charged or neutral

  6. April 30, 2014IV- W-up #5 • A certain static discharge delivers -0.5 Coulombs of electrical charge. How many electrons are in this discharge?

  7. April 29, 2014IV- W-up #4 • 1. ____ are the charged parts of an atom. a. Only electrons b. Only protons c. Neutrons only d. Electrons and neutrons e. Electrons and protons f. Protons and neutrons 2. ____ are negatively charged. a. Only electrons b. Only protons c. Neutrons only d. Electrons and neutrons e. Electrons and protons f. Protons and neutrons

  8. April 28,2014IV-W-up#3 • A shirt that looks red when white light shines upon it will look ____when magenta light shines upon it. 2. What color does cyan absorb? ______________________________________________________________________

  9. April 24, 2014IV-W-up #1 • Two lights - a Red light and a Blue light - are used to illuminate a white sheet of paper. When these light colors are mixed with equal intensities, the paper will appear ____. • a. Magenta b. Blue c. Cyan • d. Red e. Yellow f. Black N.B :[Already one day late(-10points off)] Don’t Forget to turn in the followings: • Vocab-due on 4/18/14 and W-up #1-10 • Color (Ch.14.2) worksheet

  10. April 23, 2014W-up#10 1. What primary color(s) of light can be absorbed by yellow pigment (paint)? a. red b. blue c. green d. red and blue e. red and green W-up Due Today!!!!

  11. Classwork-Ch.14.2 A day late penalty -20% (No Exception)

  12. April 21, 2014W-up #8 1. Light from red, green and blue spotlights shine on a sheet of paper. The paper contains cyan and magenta pigments. Which of the three primary light colors will be absorbed by the pigments? • a. red b. green • c. blue d. red and green

  13. Red, green and blue spotlights shine on a red sheet of paper. Which of these three light colors will be absorbed by the sheet of paper? a. Only the red. b. Only the blue. c. Only the green. d. Both the red and the blue. e. Both the red and the green. ab. Both the blue and the green.

  14. April 21, 2014W-up #8 • Red, green and blue spotlights shine on a red sheet of paper. Which of these three light colors will be absorbed by the sheet of paper? a. Only the red. b. Only the blue. c. Only the green. d. Both the red and the blue. e. Both the red and the green. ab. Both the blue and the green.

  15. April 15, 2014W-up#6 • 19. The diagram below depicts light reflecting off a planar surface. If angle A is a 65-degree angle, then the angle of reflection is ____ degrees. • a. 25 • b. 65 • c. 135 • d. 155

  16. April 16, 2014III-W-up 7 • The diagram below depicts the path of four incident rays emerging from an object and approaching a mirror. Five lettered locations are shown on the opposite side of the mirror. • Which location is representative of the image location?

  17. April 14,2014III-W-up#5 • The diagram below depicts light reflecting off a planar surface. The incident and reflected rays are labeled. If ray A makes an angle of 25 degrees with the mirror surface, then the angle of reflection is _____ degrees. • a. 25 • b. 65 • c. 135 • d. 155

  18. April 11, 2014III-W-up #4 1. Consider the visible light spectrum. Of the following listed regions of the spectrum, which consists of waves with the HIGHEST frequency? • a. orange b. blue c. red d. violet • e. yellow f. All of these have the same frequency. • VOCAB. QUIZ-

  19. April 10, 2014 III-W-up#3 1. Consider the electromagnetic spectrum. Of the following listed regions of the spectrum, which consists of waves with the LOWEST frequency? a. ultraviolet radiation b. visible light c. Gamma rays d. infrared radiation ______________________________________________________________________________________________________________________________________________________________________________________________ N.B.: Vocab Quiz on FRI. April 11,2014

  20. April 9, 2014III-W-up#2 1. Name the two types of reflection and state their differences and similarities.

  21. April 8, 2014III-W-up#1 • A 450 nm light ray has what frequency? • How far does light travel in 2 minutes?

  22. March 25, 2014II-W-up#9 Which one of the diagrams represents the standing wave pattern for the first harmonic? If none apply, then enter 'E' as the answer.

  23. March 24, 2014II-W-up#8 Which diagram below depicts the correct pattern of sound waves for a car moving away from an observer at a constant speed with the horn depressed?

  24. March 26, 2014II-W-up#10 • What is the velocity of a wave with a wavelength of 5.6 cm and has a period of 8 seconds? Turn –in your warm-up notebook today!! 20 points will be deducted for a day late submission!!!

  25. March24,2014II-W-up#8 1. Which diagram below depicts the correct pattern of sound waves for a car approaching an observer at a constant speed with the horn depressed?

  26. March24,2014II-W-up#8 • Waves typically transmit __________ . • Energy only b. matter only c. Both matter and energy d neither of these

  27. March 19, 2014II- w-up#7 1. Why should a Military Brigade break a step when crossing a suspension bridge?

  28. March18,2014Ii-w-up#6 What is the amplitude and the wavelength of the motion shown on the above graph?

  29. March17,2014II w-up#5 • A standing wave pattern is established in a 246-cm long rope. A snapshot of the rope at a given moment in time is shown in the diagram below. Vibrations travel within the rope at speeds of 22.7 m/s. What is the frequency of vibration of the rope?

  30. March 6, 2014II-W-up#4 The wavelength of a wave on a string is 1 meter and its speed is 5 m/s. Calculate the frequency and the period of the wave. QUIZ#2 on Friday March 7, 2014 Vocabulary Due on March 7, 2014 No late work is accepted!!!

  31. March4,2014II-W-up#3 Which diagram shows a wave with the shortest wavelength and the lowest amplitude?

  32. March3, 2014II. W-up#2 • What is the wavelength of the motion shown on the above graph?

  33. Feb.27, 2014II. W-up#1 • What is Wave? ___________________________________________________________________

  34. Feb.18, 2014W-Up#9 • Give Two examples for : • A) Good conductors ______, _________ • B) Good Insulators _______, _________

  35. Feb.17, 2014W-up #8 • Why does your hand feel cool if you spill some alcohol on it?

  36. Feb. 14,2014W-up #7 • Why do you think the Midwest states have a colder winters and the hotter summers compared to the Coastal states? • IMPORTANT!!!! • YOUR LAB REPORT HAS TO BE TURNED IN TODAY

  37. W-up#8 • Why does your hand feel cool if you spill some alcohol on it? The alcohol needs energy to evaporate (change of state from liquid to a gas). It takes away heat from your hand and uses that energy to evaporate. Your hand looses heat energy and therefore feels cooler.

  38. Feb.12,2014W-up#6 • What is temperature?

  39. Like any problem in physics, the solution begins by identifying known quantities and relating them to the symbols used in the relevant equation. In this problem, we know the following: m = 450 g C = 4.18 J/g/°C Tinitial = 15°C Tfinal = 85°C We wish to determine the value of Q - the quantity of heat. To do so, we would use the equation Q = m•C•ΔT. The m and the C are known; the ΔT can be determined from the initial and final temperature. T = Tfinal - Tinitial = 85°C - 15°C = 70.°C With three of the four quantities of the relevant equation known, we can substitute and solve for Q. Q = m•C•ΔT = (450 g)•(4.18 J/g/°C)•(70.°C) Q = 131670 J Q = 1.3x105 J = 130 kJ (rounded to two significant digits)

  40. Feb.19,2014W-up#10 1. What quantity of heat is required to raise the temperature of 450 grams of water from 15°C to 85°C? The specific heat capacity of water is 4.18 J/g/°C.

  41. Bonus • The high specific heat capacity of water has a great deal to do with regulating extremes in the environment. For instance, our fish in the pond is indeed happy because the heat capacity of the water in his pond is above means the temperature of the water will stay relatively the same from day to night. He doesn't have to worry about either turning on his air conditioner or putting on his woolen flipper gloves. • This same concept can be expanded to a world-wide scale. The oceans and lakes help regulate the temperature ranges that billions of people experience in their towns and cities. Water surrounding or near cities take longer to heat up and longer to cool down than do land masses, so cities near the oceans will tend to have less change and less extreme temperatures than inland cities. This property of water is one reason why states on the coast and in the center of the United States can differ so much in temperature patterns. A Midwest state, such as Nebraska, will have colder winters and hotter summers than Oregon, which has a higher latitude but has the Pacific Ocean nearby.

  42. Feb. 10, 2014W-up#4 • Do cold objects contain heat energy? Explain

  43. Feb.11,2014W-yup#5 • Calculate the specific heat capacity of a piece of wood if 1000 g of the wood absorbs 60,000 joules of heat, and its temperature changes from 360 C to 42 0 C. REMINDER!!! • PROJECT DUE ON FEB. 14, 2014

  44. Feb. 7,2014W-up #3 • List the three kinds of heat transfer methods and the three popular temperature scales: • 1_____________ __________ • 2. _____________ _________ • 3. _____________ __________

  45. Feb.6/14W-up #2 • As the temperature of a gas in an enclosed container increases, the pressure of the gas also increases. This is because — A.as it gets hot, the container expands B. the kinetic energy of the gas particles increases, and they hit the container wall with greater speed C. the temperature increases the gravitational potential energy of the gas D the temperature increase causes an increase in specific heat, which leads to a higher pressure

  46. Jan,.29,2014W-up#8 • A child slides down a frictionless slide from a height of 1.8 m. How fast will she be going at the bottom of the slide?

  47. Jan.30,2014W-up #9 1. How much work and power is to lift a 20 kg sack of potatoes vertically 6.5 m in 10 seconds?

  48. Jan.31, 2014W-up#10 • 1. The lowest possible temperature , in degree Celsius is _______ and in kelvins is __________. • Important!!!Turn-in your W-up notebook for grade today!! I accept your w-up only if it is on your notebook, dated and questions and answers are written. • No late submission and no exception!!!!

  49. Feb.4,2014W-up #1 • Convert the following temperature values to their assigned units. • 50 o F = __________ 0 C • 200 C = __________ 0 F • 10 K = _________________ 0 C • 10 K = __________ 0 F What is Due today? 1. Key Terms and 2. Ch.12 Study Guide

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