Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

1 Fig. 1.1 shows a straight section of a river where the water is flowing from right to left at a speed of 0.54 m / s. A swimmer starts at point P an...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

2 Fig. 2.1 shows a motorcyclist accelerating along a straight horizontal section of track. The motorcyclist and motorcycle have a combined mass of 24...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

3 A rubber balloon is inflated with helium and sealed so that no helium escapes. The balloon is positioned immediately below the ceiling in a room. He...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

4 A student investigates the efficiency of a filament lamp. Fig. 4.1 shows the filament lamp with its glass bulb immersed in water in a beaker. The r...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

5 Fig. 5.1 shows a block ABCD made of glass that has a refractive index of 1.5. The block has one curved side AB and three straight sides, BC, CD and...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

6 A mobile phone (cell phone) network uses microwaves of frequency 1.9 × 10^9 Hz to transmit and receive signals. The speed of microwaves in air is 3...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

7 Fig. 7.1 shows a circuit that contains a battery, a switch, a voltmeter and three 40 Ω resistors, R1, R2 and R3. The switch is open and resistors ...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

8 The electricity supplied to a town is transmitted using a high-voltage cable. A transformer in the town has a soft-iron core.(a) Explain the princip...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

9 Fig. 9.1 represents all the particles in a neutral atom of a radioactive isotope X1. (a) Determine the number of neutrons in this atom and explain h...

2023 Summer

Theory

Identifying scalar quantities: distance, speed, time, mass, energy, temperature

10 Pluto is a dwarf planet. Fig. 10.1 shows the direction of motion of Pluto as it follows its elliptical orbit around the Sun. (a) Point X is the poi...

2023 Summer

MCQ

Understanding scalar and vector quantities

In which row are quantities correctly categorised into scalar quantities and vector quantities? [Table_1]

2024 Summer

MCQ

Understanding scalar and vector quantities

Which name is given to the quantity of matter in an object?

2024 Summer

MCQ

Understanding scalar and vector quantities

A body is moved from place X to place Y where the gravitational field strength is different. What happens to its mass and to its weight due to the mov...

2024 Summer

MCQ

Understanding scalar and vector quantities

The mass of an object is 2.5 kg. The volume of the object is 480 cm^3. What is the density of the object?

2024 Summer

MCQ

Understanding scalar and vector quantities

Four objects each have two forces acting on them. Which object is in equilibrium?

2024 Summer

MCQ

Understanding scalar and vector quantities

A ball of mass $m$ falls vertically and hits a hard surface. Its speed on hitting the surface is $v_1$. It rebounds vertically upwards with speed $v_2...

2024 Summer

MCQ

Understanding scalar and vector quantities

A stone is dropped from a tall tower and falls a distance of 50 m to the ground. The stone has a mass of 3.0 kg. At which speed does the stone hit the...

2024 Summer

MCQ

Understanding scalar and vector quantities

A coal-fired power station generates electricity. Coal is burned and the energy released is used to boil water. The steam from the water makes the gen...

2024 Summer

MCQ

Understanding scalar and vector quantities

A man puts some ice into a glass of water on a warm day. After a short time, he notices that the ice disappears and that water droplets appear on the ...

2024 Summer

MCQ

Understanding scalar and vector quantities

Gas of volume 200 cm^3 is trapped inside a container by a piston. The piston is pushed to the right and the volume of the gas decreases to 100 cm^3. T...

2024 Summer