Question 1 (1 point} During a lightning strike, 24 C of charge moved from the bottom of a cloud to the top of a water tower. The charge moved across an electric potential difference of 1.2 ' 108 V. What amount of energy was released during the lightning strike? Q 2.88 x 109 J [:sz. 2.00 X 10-7 J \\ (":1 1.17 x 107 J q") 3.60 X 103 J Question 2 [1 point) A student drew field lines around a spherical source. The student did not indicate what kind of field the diagram represented. The student's diagram most likely represents 1:} an electric field around a negatively charged ball .3: :1 a gravitational field around a massive ball I::___::I a magnetic field around a magnetized ball I::___::I an electric field around a positively charged ball Question 3 [1 point) Match each type of field from the first column with its type of test object from the second column and its nature of force from the third column. Please note that there is more than one possible answer but you only need to respond with one. Your answer should be 3 digits with no spaces or commas column 1 column 2 column 3 Type of Field Type of Test Nature of the Object Force 1 gravitational 1 compass 1 attractive or repulsive 2 electric 2 small mass 2 always attractive 3 magnetic 3 small electric 3 always charged object repulsive Question 4 [1 point) A positively charged test object is placed in the electric field caused by a negatively charged object. The test object is to the left of the negatively charged object. At the position of the test object, the correct direction of the fieid is ____i____ and the correct direction of the force on the test object is ____ii The statement above is completed correctly by the following information: :._ I' __::I to the right: to the right '\\ I::::I to the right: to the left \\ '7: to the left; to the right \\ (:_:. to the left; to the left \\ Question 5 (1 point} Which of the following can best function as test bodies in a magnetic field? I7 :I negatively charged strips of paper (:_:. grass seeds \\ / [:1 tiny ebony particles \\ :. I:\\__:I compass needles Question 6 (1 point} Which of the following is a source of a magnetic field? I7 :I a large iron sphere .;:_ :I a current-carrying coil of wire .;:_ :I an ebonite rod .;:_ :I an electrically charged cloud Question 7 (0.5 points) The direction of the field lines of an electric field is either toward or away from the charged object '7: True \\ :._. r_ :1 False '\\ Question 8 (0.5 points) The direction of the field lines of a magnetic field is toward the field source '7: True \\ :._. .-_ :1 False '\\ Question 9 [0.5 points) The direction of the field lines of a gravitational field is toward the field source (":1 True \\ :._. .-_ :1 False '\\ Question 10 [0.5 points) The density of the field lines indicates the field's strength. /_'\\ I\\_/I True Question 11 [4 points) Match each description with the appropriate term a characteristic of an object clue to an excess of electrons a property of space around a mass, magnet, or electric charge a unit of charge a unit of electrical potential difference a characteristic of an object clue to a loss of electrons a material that cannot conduct an electric current well a material in which electrons can move around freely an object placed in a region to determine the presence of a field conductor coulomb field insulator negatively charged positively cha rged test body volt Question 12 (1 point] You have studied the relation between gravitational field strength {g1 and the distance {r} from the source of the field. Suppose you wanted to describe this relationship by sketching a graph. Which graph would best represent the relation? Question 13 (1 point] Position B is twice as far from the centre of a planet than Position A. A rocket moves from Position A to Position B. How does the planet's gravitational field strength change for the rocket? I::2::I The gravitational field strength decreases by a factor of 1/2 / I2::I The gravitational field strength increases by a factor of 4. / I: :2: The gravitational field strength decreases by a factor of 1/4 \\ / I2::I The gravitational field strength increases by a factor of 2. Question 14 (1 point] Suppose two identical balloons are each positively charged and positioned with their centres far enough apart so they are not close to touching each other. The balloons are then moved farther apart so that the distance between their centres doubles. What would be the expected change in the force of repulsion of one balloon on the other due to their increased separation? / I: 2::I The magnitude of the force of repulsion decreases by a factor of 1/2 \\ / I: 2::I The magnitude of the force of repulsion decreases by a factor of 1/4 \\ / I: 2::I The magnitude of the force of repulsion increases by a factor of 2. \\ / I: 2::I The magnitude of the force of repulsion increases by a factor of 4. \\ Question 15 [1 point] Assume that the force of the gravitational field strength on the surface of Mars is 3.70 N/kg. An astronaut is standing on the surface of Mars. In his spacesuit he has a mass of 215 kg. What would his weight be at that location? (:::I 58.1 N (Z::ZI 854 N (Z::ZI 796 N (:::I 116 N \\_. Question 16 [0.5 points] The unit for mass is the newton I:'Z_Z::I True \\. I:'Z_Z::I False \\ Question 17 [0.5 points] Electric field strength is equal to the magnitude of the electric force on a test body with a charge of 1 C. I"Z_Z::I True '\\ (Z_Z::I False Question 18 [0.5 points] A magnetic field exerts a force on electrically charged objects that are motionless within the field. (Z_Z::I True I"Z_Z::I False '\\ Question 19 [0.5 points] All moving electrical charges create a magnetic field I:'Z_Z::I True \\_. I:'Z_Z::I False \\ Question 20 [1 point] Cosmic ray particles can do permanent damage to DNA, especially if both strands are damaged. Explain why damage to just one base on one strand of a DNA molecule may be repairable. paragraph v a I Uv A, iv v a: or +v :: LatOlRecom... V 19px... v -.-| 9. -== E'Q Question 21 [1 point) A student's rcscarch indicates that Pluto's radius is 1.112 X 10'5 m and its mass is 1.2 X 1022 kg. Calculate the gravitational field strength at Pluto's surface 0 53 N/kg O 0.75 N/kg C) 0.58 kag Question 22 [1 point) Calculate the force of gravityr at Pluto's surface on an object with a mass of 100 kg. Use the formula for F9 in your Data Booklet Question 23 (1 point) A balloon with a radius of 16 cm has an electric charge of4.25 X 109 C. Determine the electric field strength at a distance of 40.0 cm from the balloon's centre I\") 848 N/C \\ If) 847 N/C \\ / K j. 239 we IT) 238 N/C \\