Diagram 4 shows Jamal drives a bike at a constant speed of 25 ms^-1. The two forces resisting motion are air friction of 30 N and frictional force of 80 N.

Determine the thrust force of the engine.

Diagram 5 shows a boy bending his leg upon landing.

Why does the boy bend his leg?

Diagram 6 shows the force, F against extension, x graph of a spring.

Calculate the elastic potential energy stored in the spring when the extension is 3 cm.

Diagram 8 shows a simple pressure gauge connected to a thistle funnel. The thistle funnel is immersed in a vessel containing water at height, h from the bottom of the vessel.

What happens to the reading of the pressure gauge if the funnel is lowered into the water?

Diagram 10 shows Farhan in a water tank where he is weighed while completely submerged. His weight is 1000 N in air and his body volume is 0.08 m³.

Water density = 1000 kg m^-3

What is his apparent weight when he is completely submerged in water?

Diagram 11 shows Faris is lying on an air mattress. With the mattress he can ignore the rock and sticks that are on the ground beneath him.

The air mattress takes advantage of

When the gas in air-tight container is compressed, what will remains unchanged?

24 000 J of heat is used to increase the temperature of 0.8 kg metal block from 25°C to 55°C.

What is the specific heat capacity of the metal block?

Diagram 13 shows a gas trapped inside a glass tube at the temperature 27^oC.

What is the temperature if the length of the gas trapped increases to 12 cm?

Which of the following graphs shows the relationship between the pressure, P, and the volume, V, of a gas according to Boyle's law?

The refractive index of a glass block is 1.63.

Calculate the velocity of light in the glass block.

Velocity of light in air = 3.0 x 10⁸ ms^-1

Diagram 15 shows a man standing in front of a plane mirror.

The mirror is moved 1.5 m away him. What is the distance between the man and his image right now?

Diagram 16 shows a ray hits a semicircular glass block at an angle, Ɵ. Which is the correct path of light if Ɵ less than critical angle of the glass block?

Which of the diagram shows the correct refraction of light ray after passing through a concave lens?

Which one is waves that cannot travel through vaccum?

Sound that produced from an ambulance is low frequency.

The purpose is, to make sound waves

Diagram 17 shows a pattern of sound waves that produced by a speaker.

Velocity of a sound waves is 330 ms^-1

What is the frequency of the sounds waves produced from the speaker?

Which of the following colours have the shortest wavelength?

Which graph shows the relationship between frequency, f and period, T of a wave?

The Diagram 18 shows wave fronts that move towards the beach from the sea. It is observed that the sea is calmer at the bay than at the cape.

The phenomena seen in diagram is

Which circuit can be used to determine the electromotive force of a battery?

Which graph shows the relationship between the potential difference, V and the current, I for an Ohmic conductor?

Diagram 19 shows a cell of 2 V is connected in series with an ammeter and a light bulb. The resistance of light bulb is 2 Ω and the current flows in the circuit is 1 A.

If all the cells, bulbs and ammeters are identical, which circuit gives the ammeter reading is 1 A?

Diagram 20 shows a wire which is 1.0 m long has a resistance of 2.0 Ω. When connected to a cell, the current flowing through the wire is 3.0 A.

If the same wire is 2.0 m long and is connected to the same cell, what will be the resistance of the wire and the current flowing through it?

Diagram 21 shows an electromagnet PQ.

Which of the following will increase the strength of the electromagnet?

Diagram 22 shows a current-carrying conductor, P, located within the magnetic field.

Which of the following shows the correct direction of force?

In a long-distance electrical power transmission, high voltage is applied to

Diagram 23 shows a magnet is moved towards solenoid XY.

Which statement is true?

Diagram 24 shows a transformer that has efficiency of 80%.

If it produces an output power of 100 W, what is the amount of current flowing in the primary coil?

Which circuit will light up the bulbs?

Diagram 28 shows a transistor circuit which functions as a safety vault alarm system.

What happens to the resistance of P and the state of Q when the surrounding is dark?

Diagram 30 shows a radioactive decay curve of a radioactive substance.

Diagram 31 shows the radioactive decay series of nucleus W to nucleus Z.

How many alpha and beta particles are emitted in this process?