devozeeba The diagram below shows two small identical spheres, P and Q, on insulated stands. The charge on sphere P is -3 × 10-6 C and the charge on sphere Q is unknown. 10.1 Calculate the number of electrons in excess on sphere P. (3) The two spheres are brought into contact and are then returned … Read more
A compass is used to determine the poles of a magnet. The compass is placed in different positions around the magnet, as shown below. The dark arrow indicates the north pole of the compass. 9.1 Explain the term ferromagnetic materials. (2) 9.2 Is X a NORTH pole or a SOUTH pole? (1) 9.3 At which … Read more
The frequency and corresponding energy of electromagnetic waves are given in the table below. 8.1 Describe how an electromagnetic wave propagates. (2) 8.2 What is the relationship between frequency and energy of an electromagnetic wave, as shown in the table above? (2) 8.3 Calculate the: 8.3.1 Frequency of wave E (3) 8.3.2 Wavelength of wave … Read more
A sound wave is produced by a source placed a certain distance from a building as shown below. The echo reaches the source after 8 seconds. The speed of sound in air is 340 m·s-1. 7.1 Define the term longitudinal wave. (2) 7.2 Calculate the distance between the sound source and the building. (4) 7.3 … Read more
The diagram below represents a transverse wave produced by source A. 6.1 Define the term amplitude of a wave. (2) 6.2 Write down the amplitude, in metres, of this wave. (1) 6.3 Determine the period of this wave. (1) 6.4 Calculate the: 6.4.1 Speed of the wave if the wavelength is 0,8 m (5) 6.4.2 … Read more
A 2 kg ball rolls from rest from point A on a frictionless track ABCD, as shown below. The horizontal section, BC, of the track is 5 cm above the ground. The ball reaches point D, 30 cm above the ground, at a speed of 1,71 m∙s-1. 5.1 Write down ONE term for the following … Read more
The velocity-time graph below represents the motion of a car over a time period of 12 seconds. The car initially moves NORTH. 4.1 Define the term velocity. (2) 4.2 Describe the motion of the car from C to E. (3) 4.3 WITHOUT USING EQUATIONS OF MOTION, calculate the: 4.3.1 Distance that the car travels from … Read more
An aeroplane touches down on a runway at a velocity of 67 m·s-1, as illustrated below. After 30 seconds the velocity of the aeroplane is 8 m·s-1.The aeroplane then continues at a CONSTANT VELOCITY for a further 800 m before leaving the runway. The length of the runway is 2 000 m. 3.1 Define the … Read more
A boy walks in an EASTERLY direction, as shown below. After he passes a tree, he continues in the same direction for another 20 m. He then stops, climbs on his skateboard and rides in a WESTERLY direction for 25 m before he finally stops. The resultant displacement of the boy when he finally stops … Read more
Study the advertisement (TEXT D) and answer the set questions. TEXT D 3.1 What type of service is being advertised? (1) 3.2 To whom does this advertisement appeal? (1) 3.3 Identify the slogan used in the advertisement. (1) 3.4 State ONE way in which one can get access to the emergency assistanceapplication. (1) 3.5 What … Read more