A gcps.desire2learn.com D2L Performance Final Exam Copy of Fission vs. Fusion Homew Performance Final Exam Time Left:1:28:05 Maria Romero-Hernandez: Attempt 1 Question 4 (16 points) Listen WAVES AND SOUND: v = fl D = 1 = 7 cycles seconds T = [(Usound + Vobserver) fapparent = factual (Vsound - Vsource) Vsound = 331 m/s + (0.6 m/s x Temperature ) A swimmer resting on a raft notices 12 wave crests pass him in 18 s. The distance between one crest and the next crest is 2.6 m. Find: (a) frequency (b) velocity of the waves? c) period? d) If the temperature of the air where the swimmer rest is 23 degrees Celsius, what is the speed of sound? A A / Question 5 (20 points) () Listen ELECTRICAL POTENTIAL AND CURRENT: V = IR E = Pt P = IV C = /PI Series Circuits: Parallel Circuits: Vy = V1 + V2 + V3 + ... VT = V1 = V2= V3 =.. IT = 11 = 12- 13 - .. IT = 1,+ 12 + 13 + ... RT = R, + R2 + Rx + ...Performance Final Exam Time Left: 1:28:49 Maria Romero-Hernandez: Attempt 1 c) Is the image upright or inverted? d) Is the image real or virtual? e) To locate the image using a ray diagram, describe one line that you could draw. f) While traveling through the lens, the speed of the light 1) Parallel to the principle axis and then through the focal point on the other side of the lens. O 2) decreases, light travels slower in the lens than in air 3) -2.0 cm = magnification 4) virtual 5) inverted 6) Parallel to the principle axis, down to the center of curvature and wen through 2F. 7) increase: light travels faster in the lens than in air 8) 0.5 cm = magnification 9) 5.0 cm = image distance 10) real O 11) 30.0 cm = image distance 12) upright E9 F10 F11A gcps.desire2learn.com D2L Performance Final Exam Copy of Fission vs. Fusion Homew Performance Final Exam Time Left:1:28:11 Maria Romero-Hernandez: Attempt 1 Question 3 (16 points) Listen ELECTROSTATICS: kQ1Q2 Felectrostatic = r2 Using Coulomb's Law, determine how the electrostatic force is affected in the following situations. Two charges, , and 2, are separated by a distance, r and the electrostatic force between the 2 charges is F. a) If 21 increases by 5 times its original value, how does F (the force) change? b) If r is halved (reduced by 2), how would F (the force) change? c) If 2, is positive and 2, is negative the charges will? (attract or repel) d) If 2, is 5 times larger than , the force that O, exerts on 2. is (greater than, smaller than, or exactly the same as) the force that , exerts on 21 . Paragra... B I UV EV + v Lato (Rec... 18... C There will be 4 answers for this question: (A. B. C. D.)Time Left:1:28:55 Maria Romero-Hernandez: Attempt 1 Select the 6 correct answers from the list below: Optics 1 C = 2f m= ho m= c = 3x10m/s Vmaterial n, sino = n, sine, sin 0 = An object is placed 15 cm in front of a converging lens with a focal length of 10 cm. Answer the following. 2F a) What is object distance? b) What is the magnification of the image? c) Is the image upright or inverted? d) Is the image real or virtual? e) To locate the image using a ray diagram, describe one line that you could draw. f) While traveling through the lens, the speed of the light_ 1) Parallel to the principle axis and then through the focal point on the other side of the lens. n .gcps.desire2learn.com Is D21. Performance Final Exam Copy of Fission vs. Fusion Homewe Performance Final Exam Limit: 1:30:00 Time Left:1:28:18 Maria Romero-Hernandez: Attempt 1 1: a. The diagrams below represent two different nuclear processes. Which represents the process that produces energy in the sun? Diagram 1 Diagram 2 ENERGY b. A student has an 80 g sample of a radioactive material that has a half-life of 20 seconds. How much material will he have left after one minute? c. Given the periodic table below, write a beta decay equation for the transmutation of a radioactive isotope of Rutherfordium, which has 104 protons and 183 neutrons. Periodic Table of Elements 19 12 13 14 15 16 17D2L Performance Final Exam Copy of Fission vs. Fusion Homework Performance Final Exam Time Left:1:27:58 Maria Romero-Hernandez: Attempt 1 ELECTRICAL POTENTIAL AND CURRENT: V = IR E = P P = IV C = rPt Series Circuits: Parallel Circuits: VT = V1 + V2 + Vg + ... T = V, = V2 = VS=... IT = 1= 12 - 13 - .. RT = R, + R2 + Rg + .. 1 1 Based on the circuit drawn below: (Please use your VIRP chart) R1 = 15 0 V = 120 V R2 = 20 0 R3 = 5 92 a) What is the value for RT (Total Resistance)? b) What is the total Current IT? c) What is the potential difference V2across R2 ? d) If the same 3 resistors were arranged in parallel with the same battery (voltage), would the total Resistance RT (equivalent resistance) for the circuit increase, decrease or remain the same? Simple Electromagnet Battery vectorStock' e) A physics teacher takes some of the wire used to create the given circuit and uses it to make an electromagnet by wrapping it around an iron core and connecting it to a voltage source. Describe one way to increase the strength of the electromagnet