Theory

CH4 - FORCES AND ENERGY

A car of mass 900 kg is travelling at a steady speed of 30 m/s against a resistive force of 2000 N, as illustrated in Fig. 2.1.(a) Calculate the kinet...

2010 Summer

2

Theory

CH4 - FORCES AND ENERGY

A force $F$ moves a load from the bottom of a slope to the top. [Image_1: Diagram showing the slope with a force and labels r, p, q, and load.]The wor...

2011 Winter

3

Theory

CH4 - FORCES AND ENERGY

Four people of equal weight on a beach use different routes to get to the top of a sea wall. Which person produces the greatest average power?[Table_1...

2009 Summer

2

Theory

CH4 - FORCES AND ENERGY

Which of these is designed to change electrical energy into kinetic energy?A. a capacitorB. a generatorC. a motorD. a transformer

2010 Winter

2

Theory

CH4 - FORCES AND ENERGY

(a) Energy from the Sun evaporates water from the sea. Some of this water eventually drives a hydroelectric power station. Give an account of the proc...

2011 Winter

2

Theory

CH4 - FORCES AND ENERGY

A car is driven on a long journey along a flat, horizontal road. The car stops several times on the journey and its engine becomes hot.Which type of e...

2010 Winter

2

Theory

CH4 - FORCES AND ENERGY

In which pair of energy sources are both sources renewable?A. oil and coalB. oil and tidalC. tidal and geothermalD. tidal and nuclear fission

2012 Summer

2

Theory

CH4 - FORCES AND ENERGY

Fig. 2.1 shows a conveyor belt transporting a package to a raised platform. The belt is driven by a motor.(a) State three types of energy, other than ...

2011 Summer

2

Theory

CH4 - FORCES AND ENERGY

Fig. 5.1 shows a model cable-car system. It is driven by an electric motor coupled to a gear system.The model cable-car has a mass of 5.0 kg and is li...

2010 Winter

2

Theory

CH4 - FORCES AND ENERGY

Electricity can be obtained from different energy resources.Which energy resource is used to obtain electricity without producing heat to boil water?A...

2009 Summer

2

Theory

CH1 - MEASUREMENTS AND UNITS

The diagram shows an enlarged drawing of the end of a metre rule. It is being used to measure the length of a small feather. What is the length of the...

2011 Summer

2

Theory

CH2 - FORCES AND MOTION

An object moves initially with constant speed and then with constant acceleration. Which graph shows this motion?

2011 Summer

2

Theory

CH6 - WAVES AND SOUNDS

A tennis player hits a ball hard and 0.40 s later hears the echo from a wall. The speed of sound in air is 330 m/s.How far away is the player from the...

2011 Summer

1

Theory

CH2 - FORCES AND MOTION

Which statement about mass and weight is correct?A. Mass and weight are both forces.B. Neither mass nor weight is a force.C. Only mass is a force.D. O...

2011 Summer

1

Theory

CH3 - FORCES AND PRESSURE

The diagram shows a balance being used to find the weight of a baby. The weight of the basket can be ignored.At equilibrium, the pivot is nearer to th...

2011 Summer

Theory

CH1 - MEASUREMENTS AND UNITS

A cube of side 2.0 cm is placed on a balance. What is the density of the cube? A. 0.90 g/cm³ B. 1.2 g/cm³ C. 1.8 g/cm³ D. 3.6 g/cm³

2011 Summer

1

Theory

CH3 - FORCES AND PRESSURE

Objects with different masses are hung on a spring. The diagram shows how much the spring stretches.The extension of the spring is directly proportion...

2011 Summer

Theory

CH4 - FORCES AND ENERGY

Which row gives an example of the stated form of energy?[Table_1]form of energy | exampleA gravitational | the energy due to the movement of a train a...

2011 Summer

1

Theory

CH4 - FORCES AND ENERGY

Which energy resource is used to generate electricity by first boiling water? A. hydroelectric B. nuclear fission C. tides D. waves

2011 Summer

Theory

CH4 - FORCES AND ENERGY

Two farmers use an electrically powered elevator to lift bales of hay. All the bales of hay have the same mass. As sunset approaches, they increase...

2011 Summer