11.1 Consider the circuit diagram below. Switch S is OPEN. 11.1.1 Write down the reading on the following: (a) Voltmeter (V1) (1) (b) Ammeter (A1) (1) Switch S is now CLOSED. 11.1.2 Calculate the equivalent resistance of the circuit. (4) 11.1.3 Calculate the reading on voltmeter V2. (3) 11.1.4 How do the readings on ammeters … Read more
Two identical insulated spheres, X and Y, suspended by threads from a ceiling, areheld at a small distance apart, as shown in the diagram below. Sphere X carries a charge of + 4 x 10-18 C, while sphere Y has an excess of30 electrons. 10.1 Calculate the magnitude of the charge on sphere Y. (3) … Read more
Four metallic bars, suspended freely from a ceiling, interact, as shown in the diagrambelow. The points of attachment of X and Y on the ceiling are 4 cm apart. The two bars in the middle are bar magnets (X and Y) and the distance between themis 5 cm. One of the bars (A or B) … Read more
The types of electromagnetic radiation are arranged according to frequency in the tablebelow. 8.1 How are electromagnetic waves generated? (1) 8.2 What type of electromagnetic radiation has the highest energy? (1) 8.3 Explain the answer to QUESTION 8.2. (2) 8.4 A certain type of electromagnetic radiation has a wavelength of 600 x 10-10 m. 8.4.1 … Read more
Experiments were done to investigate the effect of temperature on the speed of sound.One person beat a drum while another person, who was standing 50 m away from thesound source, recorded the time travelled by the sound. They performed the experiment at different temperatures at different times of the day.They recorded their findings in the … Read more
Study the two transverse waves, P and Q, as shown below. 6.1 Write down ONE difference and ONE similarity between wave P and wave Q. (2) 6.2 For wave pattern P, write down: 6.2.1 Two points that are out of phase (1) 6.2.2 The amplitude of the wave (1) 6.3 Define the term frequency of … Read more
A skateboarder, starting from the top of a ramp 4,5 m above the ground, skates downthe ramp, as shown in the diagram below. The mass of the skateboarder and his boardis 65 kg. Ignore the effects of friction. 5.1 Define the term gravitational potential energy in words. (2) 5.2 Calculate the gravitational potential energy of … Read more
Two cars, A and B, are moving at speeds of 15 m·s-1 and 30 m·s-1 in the samedirection. They are side by side when both drivers observe an obstruction ahead ofthem, as shown in the diagram below. Both drivers apply their brakes and accelerate at –4,5 m·s-2 until both cars come torest. Ignore the reaction … Read more
The diagram below shows the positions of an athlete at different time intervals during arace. 3.1 Distinguish between motion with uniform velocity and uniformly accelerated motion. (4) 3.2 What type of motion (motion with uniform velocity or uniformly accelerated motion) is represented by the following intervals? 3.2.1 A to B (1) 3.2.2 B to C … Read more
A baby leaves a bowl of food on the floor and crawls westwards to fetch a toy placed 5 maway. At the same time a dog walks eastwards towards the baby. It takes the baby 30 sto reach the toy. The dog walks past the toy to eat the baby’s food in the bowl. 2.1 … Read more