A piece of ice at 0 °C is placed on the palm of a person's hand. It soon begins to melt. Energy flows from the hand to the ice. In which direction does the ...

A student places 0.050 kg of ice at 0 °C into a well-insulated container. She supplies energy at a steady rate of 200 W. The graph shows the temperature risi...

A stroboscopic photograph records the position of a ball rolling along a flat bench. The flash fires every 0.10 s. The diagram shows the result. What is the ...

The diagram illustrates a chain reaction inside a nuclear reactor. For a controlled, sustained chain reaction in a nuclear reactor, on average how many neutr...

A wooden cube has sides of length 5 cm. It floats in water of density 1.0 g/cm3 with 3 cm of the cube below the surface, as shown. What is the density of the...

A 1200 kg car travels east at 15 m/s. It collides head-on with a 900 kg van travelling west at 20 m/s. The vehicles lock together after the collision. The di...

A student heats a beaker of water using a Bunsen burner placed under the beaker. The student says that the water is heated by a combination of conduction, co...

The N pole of a bar magnet is brought close to end X of an unmagnetised iron bar as shown. Which diagram correctly shows the induced poles on the iron bar?

The table shows information about three electromagnetic waves travelling through a vacuum. Wave Wavelength / m Speed / m/s P 3.0 × 10−10 3.0 × 108 Q 5.0 × 10...