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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.
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