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QUESTION 1 Which of the diagrams correctly represents the forces acting on an object resting on an inclined plane? (A) (B) ©) (D)
QUESTION 2 The definition of average speed is the rate of change of (A) velocity. (B) distance. (C) acceleration. (D) displacement.
QUESTION 3 The diagram shows two vectors. Vector A: 12 km to the east Vector B: 9 km to the south _ Calculate the magnitude of the resultant vector when Vector A is added to Vector B. (A) 15km (B) 16.5 km (C) 21 km (D) 108 km
QUESTION 4 The diagram shows a current-carrying loop moving from one magnetic field to another magnetic field in 0.600 seconds. B=3.00mT B=150mT X X X X X % > X X 2 X X X X X X X X X X X Not to scale Calculate the magnitude of the EMF produced in the current-carrying loop. (A) 126x10°°V (B) 126x107°V ) 126x107'v (D) 126x 10>V
QUESTION 5 Which of the following is Lenzs Law? (A) The total electric charge of an isolated system remains constant regardless of changes within the system. (B) The magnetic flux around a current-carrying wire changes in proportion to the rate of change of the current. (C) The direction of an induced electric current always opposes the change in the circuit or magnetic field that produces it. (D) The ratio of the sines of the angles of incidence and refraction of a wave is constant when the wave passes between two given media.
QUESTION 8 An object 46 m above the ground is projected horizontally with an initial velocity of 25 m s7L Calculate the horizontal displacement of the object at the time it reaches the ground. (A) 77m (B) 120m (©) 190m (D) 240m
QUESTION 11 The diagram shows object A and object B being projected at different velocities. Which of the following statements is true? (A) Object A has a shorter flight time than object B. (B) Object A has a smaller maximum height than object B. (C) Object A has a larger horizontal velocity than object B. (D) Object A has a smaller horizontal displacement than object B.
QUESTION 12 Which of the following is one of Keplers laws of planetary motion? (A) (B) ©) (D) The laws of physics are the same in all inertial frames of reference. All planets move about the Sun in elliptical orbits having the Sun as one of the foci. The speed of light in a vacuum has the same value c in all inertial frames of reference. The force of attraction between each pair of point particles is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
QUESTION 15 Calculate the orbital period of a satellite travelling on a 3.00 X 10® m radius orbit around the Earth. (A) 1.44 x 102 hours (B) 4.54 x 10? hours (C) 1.64 x 10° hours (D) 7.44 x 10% hours
QUESTION 17 The definition of magnetic field is (A) (B) ©) (D) a region of space through which the total magnetic flux is measured. a region of space surrounding a body in which another body experiences a force of attraction. a region of space around an electrically charged particle or object within which a force would be exerted on other electrically charged particles or objects. a region of space near a magnet electric current or moving electrically charged particle in which a magnetic force acts on any other magnet electric current or moving electrically charged particle.
QUESTION 18 Calculate the initial vertical velocity of a projectile with an initial velocity of 68 m s 'atan angle of 51° up from the horizontal. (A) 43ms! (B) 51ms! (C) 53ms! (D) 68ms !
QUESTION 19 A solenoid with 24 loops of wire produces an EMF of 36 V during a magnetic flux change of 0.3 Wb. Calculate the period during which the magnetic flux varied. A) 02s (B) 05s C) 2.2s (D) 50s
QUESTION 21 (3 marks) An object that is 7.12 x 10° m from the centre of the Earth experiences a gravitational force of 2.84 kN. Calculate the mass of the object. kg (to the nearest whole number)
QUESTION 25 (3 marks) Mars has an average orbital radius of approximately 1.5 times the average orbital radius of Earth. Calculate the time it takes Mars to orbit the Sun. days (to the nearest whole number)
QUESTION 28 (4 marks) The diagram shows a charged particle moving between two current-carrying wires. [ =4A r =0.5m qg=2nC e> v=333x10°ms L=05A Calculate the magnitude of the magnetic force acting on the charged particle. Magnetic force = N (to 2 decimal places)
QUESTION 2 (6 marks) A physicist measured the electric field strength at different distances away from a point charge. The data is plotted in the graph. Electric field strength (N ch a) b) 0 0.005 0.01 0.015 0.02 0.025 0.03 . er2 3 (m) : : : : 1 Identify the mathematical relationship between £ and [3 marks] r Use the mathematical relationship identified in 2a) to deduce the magnitude of the charge creating the electric field. [3 marks] C (to 1 decimal place)
QUESTION 5 (4 marks) An electron is situated halfway between two nuclei that are separated from each other by a distance of 4.5 x 107 m. The first nucleus contains two protons. The second nucleus contains three protons. Calculate the magnitude of the overall electromagnetic force experienced by the electron. N (to 1 decimal place)
QUESTION 6 (4 marks) The diagram shows a particle Q entering a uniform magnetic field of 0.090 T. The particle has a speed of 1.5 x 10°m s!. Once in the magnetic field the particle moves in a circular path as shown. O e __________________ B=0.090T It is suspected that Q 1s one of the particles listed in the table. Particle number | Charge g (C) Mass m (kg) Determine which particle Q is most likely to be.
QUESTION 8 (4 marks) The diagram shows an object sliding down a frictionless inclined plane. sy [~ Not drawn to scale The graph shows the velocity of the object measured at various times. 35 30 T 25 g > 20 2 § 15 10 5 5 0 0 1 2 3 4 Time (s) Determine the angle of incline 6. of the inclined plane. Show your working. N
QUESTION 9 (5 marks) Nine planets orbit the same star. The orbital radius and orbital period of each planet was measured. The graph shows the cube of the orbital radius of each planet compared to its orbital period squared T 2 18 ek AN Orbital radius cubed 7* (10°? m?) 0 10 000 20 000 30 000 40 000 50 000 60 000 70 000 Orbital period squared 72 (days?) Determine the mass of the star. Show your working. kg (to 1 decimal place)
QUESTION 2 Calculate the initial horizontal velocity of a projectile with an initial velocity of 38 m s!atan angle of 42° up from the horizontal. (A) 25ms (B) 28m g1 (C) 34ms! (D) 40ms!
QUESTION 4 The diagram shows two charges (¢ and g ) separated by a distance (d). d g@t> 0 There is a force F acting between the two charges. Calculate the magnitude of the force acting between the two charges if d is halved and the charge of ¢ is doubled. (A) 1IF (B) 2F (C) 4F (D) 8F
QUESTION 6 Electromagnetic radiation is (A) (B) © (D) extremely high-frequency radiation emitted from the nucleus of some radionuclides. the emission of energy as waves or particles especially high-energy particles that causes ionisation. a wave of energy produced by an oscillating electric charge resulting in mutually perpendicular electric and magnetic fields. radiant energy consisting of synchronised oscillations of electric and magnetic fields or electromagnetic waves propagated at the speed of light in a vacuum.
QUESTION 7 Normal force is the force acting along an imaginary line (A) parallel to the surface. (B) perpendicular to the surface. (C) opposite to the gravitational force. (D) 1n the same direction as the gravitational force.
QUESTION 8 The diagram shows two displacement vectors. Vector A Vector B s=20m Calculate the resultant vector above the horizontal axis when Vector A is added to Vector B. (A) 43.6m at 36.6° (B) 43.6m at 53.4° (C) 48.4mat 18.1° (D) 48.4 m at 71.9°
QUESTION 11 Uniform circular motion occurs when an object is travelling in a circle at a constant (A) speed due to a force of constant magnitude acting in a parallel direction to its velocity. (B) wvelocity due to a force of constant magnitude acting in a parallel direction to its speed. (C) speed due to a force of constant magnitude acting in a perpendicular direction to its velocity. (D) wvelocity due to a force of constant magnitude acting in a perpendicular direction to its speed.
QUESTION 12 Calculate the maximum height reached by a projectile with an initial velocity of 15 m s'atan angle of 30° up from the horizontal. (A) 2.87m (B) 3.83m (C) 8.6l m (D) 11.5m
QUESTION 13 Calculate the orbital period of a satellite travelling around the Earth with a radius of 4.00 X 10% m. (A) 3.49 x 1072 hours (B) 3.94 x 10% hours (C) 6.99 x 10% hours (D) 1.76 x 10° hours
QUESTION 14 Moving electric charges in a magnetic field experience (A) adecrease in charge. (B) an increase in charge. (C) aforce parallel to the direction of the magnetic field. (D) a force perpendicular to the direction of the magnetic field.
QUESTION 16 The weight of a 5 kg object on Earth is (A) 049N (B) 051N (C) 49N (D) 51N
QUESTION 17 Electrical potential energy is the (A) 1ntensity of an electric field at a particular location. (B) difference in potential that tends to give rise to an electric current. (C) capacity of electric charge carriers to do work due to their position in an electric circuit. (D) work done on an electron in accelerating it through an electrical potential difference of one volt.
QUESTION 18 A gravitational field is the (A) net gravitational force per unit mass at a particular point in space. (B) energy stored in an object as a result of its position relative to another object. (C) region of space surrounding a body in which another body experiences a force of gravitational attraction. (D) position in space where objects experience a force or acquire potential energy as they are worked into that position.
QUESTION 21 (3 marks) 169.
QUESTION 22 (3 marks) A planet is orbiting a 3.38 x 10! kg star. The radius of the orbit is 4.23 x 10% km. Calculate the average speed of the planet. Average speed = ms ' (to the nearest whole number)
QUESTION 23 (5 marks) The diagram shows a metal rod with a mass of 10.0 g and a length of 8.0 cm suspended in a uniform magnetic field of 0.50 T. There is no electric current through the metal rod when it is in Position 1. DC to power supply DC from power supply .'/ K\ Position 1 A;n Not to scale When a current (/) is passed through the metal rod it moves to Position 2 with an angle of 40° to the vertical. DC to power supply DC from power supply Position 2 Not to scale Determine the magnitude of the current required to move the metal rod into Position 2. Current = A (to 1 decimal place)
QUESTION 24 (3 marks) The diagram shows a 1.5 kg object on an inclined plane with an angle of 30° up from the horizontal. The object experiences a frictional force of 4.5 N. e Not to scale Calculate the magnitude of the net force acting on the object. Magnitude of net force = N (to 1 decimal place)
QUESTION 25 (4 marks) The graph shows the centripetal forces required to keep objects with different mass in uniform circular motion with a constant speed and constant radius of 20 cm. 7 Centripetal force (N) 0 0.05 0.10 0.15 0.20 0.25 Object mass (kg) Determine the speed of the objects.
QUESTION 1 (3 marks) A charge of 2.8 x 1077 C experiences an electrostatic force of 5.2 X 10~ N when placed near a charge of 32%x 1077 C. Calculate the distance between the two charges. Distance = m (to 2 significant figures)
QUESTION 3 (3 marks) An object undergoes uniform circular motion in a path with a radius of 7. Determine the effect on the radius if the mass of the object is doubled but the centripetal force and velocity remain unchanged.
QUESTION 4 (4 marks) A spacecraft is located between two large asteroids Asteroid A and Asteroid B that are 120 km apart. Asteroid As mass is approximately four times the mass of Asteroid B. Determine the distance of the spacecraft from Asteroid B if it experiences no net gravitational force from the two asteroids. Distance from Asteroid B = km (to the nearest whole number)
QUESTION 5 (4 marks) An alpha particle with a charge of +3.2 X 107 C moves through an electric field accelerating from rest through a potential difference of 240 V. Determine the velocity of the particle at the end of its acceleration expressing your answer in scientific notation. Velocity = ms (to 2 significant figures)
QUESTION 6 (4 marks) The diagram shows the magnetic field lines inside a solenoid carrying a current of 2 A. P l__--- Not to scale a) Calculate the number of turns per metre that would produce a magnetic field strength of 300 uT at Point P. [3 marks] b) Determine the direction of the magnetic field produced by the solenoid. [1 mark]
QUESTION 7 (6 marks) An object on a planet is launched horizontally from a cliff. Its vertical displacement is measured over 6 seconds. The graph shows the objects vertical displacement with respect to time squared. 100 90 80 70 60 50 40 30 Vertical displacement of object (m) 20 10 0 5 10 15 20 25 30 35 40 Time squared (sz) a) Determine the mathematical relationship between vertical displacement (s) and time (7). [3 marks] b) Calculate the acceleration due to gravity on the planet. [3 marks] Acceleration = ms > (to 2 significant figures)
QUESTION 1 Electromotive force is (A) the production of voltage across an electrical conductor due to its dynamic interaction with a magnetic field. (B) adifference in potential that tends to give rise to an electric current. (C) the repulsion experienced by two negatively charged particles. (D) one of the four fundamental forces.
QUESTION 3 Which free body diagram best represents an object being pulled at a constant speed up an inclined plane? (A) Fx (B) Fx Fr Fr Fy F¢ F F ©) Fx (D) Fx F¢ Fr F{ Fy F F
QUESTION 4 An object orbiting Earth has an orbital period of 5.6 x 10° s. What is the objects orbital radius? (A) 3.8x10°m (B) 6.8x10°m (C) 1.8%x10%m (D) 1.3x10%m
QUESTION 7 Which change would produce the greatest increase in magnetic field strength inside a current-carrying solenoid? (A) decreasing the thickness of the wire (B) increasing the length of the solenoid (C) adding more turns of wire to the solenoid (D) using an alternating current instead of a direct current
QUESTION 9 Which diagram would result in the furthest horizontal distance travelled? (A) (B) ©) (D) Not to scale
QUESTION 10 Electric field strength refers to the (A) 1ntensity of an electric field at a particular location. (B) change in electrical potential energy between two defined points. (C) sum of electrically charged particles passing a point in a given time. (D) physical property of an object experiencing a force in an electromagnetic field.
QUESTION 12 An object experiencing uniform circular motion in a horizontal plane travels at an average speed of 8.0 m s Calculate the radius of the objects path if it takes 0.3 s to complete a full rotation. (A) 3.8x10'm (B) 2.6x10°m (C) 1.5x10'm (D) 1.7x10*m
QUESTION 13 A rectangular coil of 3000 turns and dimensions 0.1 m x 0.2 m is rotated in a uniform magnetic field of 2 mT. Calculate the minimum number of revolutions per second required to produce an average EMF of 6 V. A) 1 (B) 3 (C) 13 (D) 50
QUESTION 16 Two vectors are shown. Which option represents the resultant vector of X + ¥? (A) (B) (© (D) Not to scale
QUESTION 17 An object is in orbit 400 km above the surface of the Earth. The Earth has a radius of 6.4 x 10° m. What is the magnitude of the gravitational field strength experienced by the object? (A) 8.6x10°ms (B) 9.7x10°m s (C) 2.5x10°ms2 (D) 5.9x 10 ms2
QUESTION 18 The primary and secondary coils from a lossless transformer are shown. Primary Secondary Compared to the primary coil the secondary coil will experience decreased (A) power. (B) current. (C) wvoltage. (D) resistance.
QUESTION 19 A current-carrying wire is placed perpendicular to two magnets. As the current in the wire is changed the force acting on it is recorded. P - P - : : : ______________________________________________________________________ e e ] ) : ' 5 ' ' ' ; : : / ' i | -7 - . : . ~ : | : e : : T : 1 -~ : Z 4 ¥ b . : LT : | Msssrmmseme sEReRslE SEnesgEaisse sasrassae Rel Siemini S ____-________i_-____-______ _____-_;_;; f _________________________________________ S : T 3 ' - ' N T @ ' 0 .- O [ - : . o ; - - - - - - 0 0.2 0.4 0.6 0.8 1.0 Current (A) The gradient of the line of best fit is proportional to the (A) potential difference. (B) electromotive force. (C) resistance of the wire. (D) magnetic field strength.
QUESTION 24 (3 marks) A rectangular loop is placed in a uniform magnetic field of 5 mT. <20 cm= Not to scale Calculate the change in flux through the loop when it is rotated 60° around the vertical axis. Show your working. Change in flux = Wb (to two significant figures)
QUESTION 25 (2 marks) Describe how electromagnetic radiation is propagated by the interaction between electric and magnetic fields.
QUESTION 27 (5 marks) Object A is five times the mass of object B. The graph shows the contribution of each object towards the strength of the net gravitational field between them. e p 0.01 0.001 Gravitational field strength (m s_z) 0.0001 0.00001 0 10 20 30 40 Distance from the centre of A (107 m) Determine the total distance between the centre of the two objects. Show your working. Total distance = m (to two significant figures)
QUESTION 28 (7 marks) An object of mass 200 g moves in a uniform circular path with a radius of 25 cm. The time taken for 10 revolutions 1s 3.0 s. a) Calculate the distance travelled by the object after 3.9 s. Show your working. [2 marks] Distance = m (to two significant figures) b) Calculate the centripetal force acting on the object. Show your working. [5 marks] Centripetal force = N (to two significant figures)
QUESTION 3 (8 marks) Negatively charged oil drops were placed in a uniform electric field generated by two parallel plates. By altering the applied voltage between the plates the oil drops were suspended in the air between the plates. Not to scale The graph shows the electric field strength required (achieved by altering the applied voltage) to suspend negatively charged oil drops of varying weight. 3.5 ' ' T R 3.0 2.5 2.0 1.5 1.0 Electrical field strength (1019 Vv m_l) 0.5 0 10 20 30 40 50 60 Oil drop weight (N) a) Determine the average charge on the oil drops. Show your working. [4 marks] Average charge = C (to two significant figures) Another oil drop was suspended between the plates with an electric field strength of 2.0 x 10 vm b) Determine the work done to move this oil drop a distance of 5 mm towards the negatively charged plate. Show your working. [4 marks]
QUESTION 4 (5 marks) A stationary object on a frictionless inclined plane is connected to a 15 kg weight as shown. Not to scale Calculate the mass of the object on the inclined plane. Mass = kg (to two significant figures)
QUESTION 6 (14 marks) A light was shone onto a metallic surface and the subsequently released photoelectron passed through a magnetic field. Magnetic field going into the page Light source / 7 / / / Metal surface 77 a) Identify the direction the photoelectron would have curved as it passed through the changed. magnetic field. [1 mark] The graph shows the maximum kinetic energy of the photoelectron as the frequency of the light was 1.4 1.2 ____________________________________________________________________________________________________________________________ _._____________ 1.0 b) c) 0.8 0.6 0.4 Maximum kinetic energy (eV) 0.2 OO i : | ' | 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.3 2.6 1/4 (10°m) Determine the work function for the metal. Show your working. [4 marks] Work function = J (to two significant figures) If the strength of the magnetic field is 5 uT determine the maximum radius of the photoelectrons path through the magnetic field when light of wavelength 450 nm was shone onto the metallic surface. Show your working. [9 marks] Radius = m (to two significant figures)
QUESTION 7 (3 marks) Two asteroids experience a gravitational force of 3.3 x 10° N between them. Their masses are 2.7 x 10 kg and 6.1 x 10 kg. Calculate the distance between the two asteroids. Show your working. Distance = m (to two significant figures)
QUESTION 8 (4 marks) The graph shows the gravitational force experienced by a rocket of mass 750 kg as it approaches an asteroid. 30 N N N e _ () D Gravitational force on rocket (N) 9 0 5 10 15 20 25 30 35 40 45 50 17 (1073 m Determine the mass of the asteroid. Show your working.
QUESTION 9 (9 marks) A person spins an object 4.3 m above the ground in a horizontal circular path of radius 0.8 m. They release the object horizontally allowing it to travel to the ground. a) Calculate the centripetal acceleration of the object before it is released given it takes 5 s for the object to complete 12 revolutions. Show your working. [4 marks] Centripetal acceleration = ms 2 (to two significant figures) b) Calculate the total horizontal displacement for the object after it is released. Show your working. [5 marks] Total horizontal displacement = m (to two significant figures)
QUESTION 2 The weight of an object on Earth is 550 N. The mass of the object is approximately (A) 56kg. (B) 56kg. (C) 5400 kg. (D) 5400 kg.
QUESTION 4 The correct definition of Coulombs law is (A) (B) ©) (D) the total electric charge of an isolated system remains constant regardless of changes within the system. the direction of an induced electric current always opposes the change in the circuit or the magnetic field that produces it. when the magnetic flux linking a circuit changes an electromotive force (EMF) is induced in the circuit proportional to the rate of change of the flux linkage. like electric charges repel and opposite electric charges attract with a force proportional to the product of the electric charges and inversely proportional to the square of the distance between them.
QUESTION 6 Select the words that correctly complete the description of uniform circular motion. The motion of an object travelling at a in a circle due to a force acting on the object in a direction to the velocity of the object. (A) varied speed parallel (B) varied acceleration parallel (C) constant speed perpendicular (D) constant velocity perpendicular
QUESTION 7 Calculate the electric field strength (E) at 2 cm from a charge of 2.5 C. (A) 5.6x10°NC' (B) 23 x10°NC (C) 11x102NC! (D) 5.6 x10°NC
QUESTION 9 The diagram below shows a wire that is carrying an electric current. Point Y o 1 i The direction of the magnetic field around the wire at point Y is (A) up the page. (B) 1nto the page. (C) down the page. (D) out of the page.
QUESTION 13 Calculate the resulting radius of circular motion when a 150 g mass travelling at 3.0 m s experiences a centripetal force of 15 N. (A) 3.0cm (B) 90cm (C©) 1lcm (D) 20cm
QUESTION 15 Calculate the gravitational field strength at a distance of 3.63 x 10®* m from the centre of the Earth. (A) 496 x102 ms (B) 1.80x 10 ms (C) 3.02x10°ms (D) 1.10 x 10°m s72
QUESTION 16 Complete the following definition of magnetic flux density by identifying the two missing words. The strength of a magnetic field or the number of lines per unit area. (A) magnetic field (B) magnetic force (C) electromagnetic field (D) electromagnetic force
QUESTION 19 . 2 . . Select the two formulas that along with v = g can be used to derive Keplers third law of planetary motion. F (A) Fgmgandg; (B) F = GMm 2 <) a.= UT and F o = e GMm mu? (D) F= rand Foet =
QUESTION 20 Complete the following. (A) (B) © (D) A moving electric charge generates a meson field. baryon field. magnetic field. gravitational field.
QUESTION 22 (3 marks) A projectile has an initial velocity of 12 m s at an angle of 35° above the horizontal. Calculate the vertical component of the projectiles initial velocity. Show your working. Velocity = m s~ (to 1 decimal place)
QUESTION 23 (3 marks) A 5 kg object 1s experiencing a centripetal force of 80 N and is moving in uniform circular motion with a speed of 8 m s'. Calculate the radius of the circular path. Show your working. Radius = m (to the nearest whole number)
QUESTION 25 (4 marks) The diagram below shows a moving charged particle in a magnetic field. X X X X X X X X B=0.02T X X X X X Calculate the mass of the charged particle using the information provided in the diagram above. Show your working. Express the solution using scientific notation. Mass = kg (to 1 decimal place)
QUESTION 27 (3 marks) Object A has an initial horizontal velocity of 4 m s Calculate the angle at which Object B needs to be projected if it has an initial speed of 17 m s but the same initial horizontal velocity as Object A. Show your working.
QUESTION 28 (6 marks) The diagram below shows an object initially at rest on a frictionless inclined plane. < 1 Calculate the time it will take for the object to slide 10 m along the slope. Show your working. Time = s (to the nearest whole number)
QUESTION 1 (5 marks) Two objects each with a mass of 2.5 x 107 kg are separated by a distance 7 m m The gravitational force (F) between the two objects was measured at various distances (r). The data is plotted in the graph below. Gravitational force vs. the inverse square of the distance F (X 1078 N) 0 0.002 0.004 0.006 0.008 0.01 0.012 r2(m?) a) Identify the mathematical relationship represented by the linear trendline in the graph on page 2. Show your working. [3 marks] b) Use the information provided and the mathematical relationship between F and r identified in 1a) to determine an experimental value for the gravitational constant G. Show your working. Express the solution using scientific notation. [2 marks] Experimental valueforG=__ = Nm?kg? (to 1 decimal place)
QUESTION 2 (2 marks) The diagram below shows an electric current-carrying wire. Calculate the magnitude and direction of the magnetic field around the electric current-carrying wire at point A. Show your working. Express the solution using scientific notation. Magnitude=_____ @@ T (to the nearest whole number) Direction =
QUESTION 3 (8 marks) The diagram below shows two forces acting upon an object. This diagram is not to scale. Calculate the resultant force acting upon the object and the direction of acceleration. Show your working. Force = N (to the nearest whole number) Direction = (to 1 decimal place)
QUESTION 7 (6 marks) The diagram below shows two projectile motion scenarios Object A and Object B. Object A is released from an unknown height above the ground. It takes 4.20 seconds to reach the ground. At the same instance that Object A is released Object B is projected at an angle of 30.0° from the horizontal. Calculate the horizontal displacement of Object B given that it lands at the same time as Object A. Show your working. Horizontal displacement=____ m (to the nearest whole number)
QUESTION 3 A current-carrying wire is shown. 2.0 cm Nottoscale J=0.5A Determine the magnetic field strength at X. (A) 5x 10° T out of the page (B) 5x 10° T into the page (C) 5x 10°* T out of the page (D) 5x 10° T into the page
QUESTION 4 Kepler’s third law (A) describes the elliptical orbit of planets. (B) combines Newton’s first law of motion with uniform circular motion. (C) equates the area of the arc sweep of a planet to the time taken to complete it. (D) describes the relationship between uniform circular motion and the Law of Universal Gravitation.
QUESTION 6 An object of mass 6.0.x 107 kg travels along a path as shown. The object takes 25 seconds to complete the semicircular section of the path. Yoo _ # aN 7 \ / \ 7 \ < ra 160m | / } Yo / 7 / s fo Z 7 Va Not to scale a Calculate the centripetal force experienced by the object as it moves from Y to Z. (A) 3.0x10°N (B) 7.6x107N (C) 3.8x10°N (D) 7.6x10'N
QUESTION 9 A magnet is passed through a solenoid comprising five turns and a cross-sectional area of 0.60 m” to produce an EMF of 0.75 V. Calculate the EMF if the same magnet passes through another solenoid with three times as many turns and half the cross-sectional area at the same rate. (A) 0.89V (B) 1.1V (C) 4.0V (D) 4.5V
QUESTION 11 Coulomb’s law describes the observation that (A) an electromotive force in a circuit may be induced through changes in the magnetic flux. (B) charged particles moving across magnetic field lines experience a force. (C) achange in the electromotive force is opposed. (D) like electric charges repel one another.
QUESTION 13 A magnet moving through a coil of wire will induce a current with a magnetic field (A) parallel to the electric field. (B) opposite in direction to the change in flux. (C) inversely proportional to the electromotive force. (D) that will continue to fluctuate once the magnet is removed.
QUESTION 15 Two objects experience a gravitational force F between them. Calculate the magnitude of the force acting between the two objects if the distance between them was doubled and the mass of one object was doubled. 1 (A) red 1 (B) 5 (C) 1F (D) 2F
QUESTION 18 A 20 kg object is placed on an inclined plane with a slope of 35°. If the object experiences a frictional force of 40 N and no additional applied force calculate its acceleration down the inclined plane. (A) 3.6ms~ (B) 5.6ms~ (C) 6.0ms~ (D) 7.6ms~
QUESTION 19 Calculate the electric field strength experienced at a distance of 2.8 x107!! m from the centre of a helium nucleus. (A) 1.0x10°NC! (B) 2.0x10°NC! (C) 3.7x10?NC! (D) 7.3xl0*NC!
QUESTION 22 (3 marks) Particles move at a rate of 1.3x10° times per second around a circular particle accelerator with a radius of 35 m. Calculate the average speed of the particles. Show your working. Average speed = ms! (to two significant figures)
QUESTION 24 (4 marks) A solenoid consisting of 1240 turns is shown. Not to scale 40 cm IT=0.50A Determine the magnitude and direction of the magnetic field inside the solenoid. Show your working. Magnitude = T (to two significant figures) Direction =
QUESTION 27 (5 marks) A satellite orbits a planet of mass 6.42 x 107° kg at a height of 5000 km from the surface. The planet has a diameter of 6780 km. Determine the speed required for the satellite to maintain its orbit. Show your working. Speed = ms! (to two significant figures)
QUESTION 2 (5 marks) In a frictionless system object A rests on an inclined plane and object B undergoes horizontal circular motion. The two objects are connected by a length of string as shown. Not to scale Determine the speed of object B needed for object A to remain stationary. Show your working. ms! (to two significant figures)
QUESTION 3 (8 marks) Three charges are in a straight line as shown. +5.0 wC +5.0 uC +40 uC S T U e~«~_ re 2r e Net force on T= +2.8 N a) Calculate the electric field strength at 7. Show your working. [2 marks] Electric field strength = NC! (to two significant figures) b) Determine the value of r. Show your working. [6 marks] r= m (to two significant figures)
QUESTION 4 (3 marks) Two objects on different planets experience different accelerations due to gravity. Mass (kg) | Acceleration due to gravity (m 5) Ea Determine which object has the greatest force acting on it. Show your working.
QUESTION 6 (10 marks) A ball is thrown with an initial velocity of 8.0 m s! into a bucket as shown. 3.0m 1.8m Not to scale a) Calculate the time taken for the ball to reach its maximum height. Show your working. [4 marks] Ss (to two significant figures) b) Calculate the magnitude of the ball’s final velocity when it enters the bucket. Show your working. [6 marks] Final velocity = ms! (to two significant figures)
QUESTION 8 (6 marks) A length of wire AB is placed across an incomplete loop sitting within a magnetic field as shown. Wire AB then moves with a constant velocity of 40 m gt creating an induced EMF of 23 pV. xX xX x xX xX xX x 1.4m x x x x x x x Not to scale a) Determine the magnitude of the magnetic field strength experienced by the loop. Show your working. [4 marks] Magnetic field strength = T (to two significant figures) b) Draw aconclusion about the direction of the induced current within the loop. Justify your reasoning. [2 marks]
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