Physics A (9-1) - Gateway Science Suite J249 9-1: Matter Topical Past Paper Questions

A student investigates floating and sinking. The student draws a bar chart to show the densities of five objects, A, B, C, D and E. The student places the five objects into an unknown liquid and observes if each object floats or sinks. • Objects A and C float. • Objects B, D and…

A medical freezer is used to keep vaccines cool. (a) (i) Calculate the energy required by the freezer to cool 0.50 kg of solid vaccines from $ -5^{\circ} $C to $ -35^{\circ} $C. Assume the specific heat capacity of the vaccines is 1900 J/kg $ ^{°C} $. Use the Equation Sheet. Ener…

(a) The air in a car tyre has a pressure of 200 kPa. A driver notices that after a long journey the pressure in the tyre has increased. They think this is because the temperature of the tyre has increased. Explain, in terms of molecules, why the pressure in the tyre has increased…