(a) The energy required to water, rather than Environment & Agriculture: change 1 kg of a liquid change its state. Water purification, solar in to a gas OR the energy. energy given out by 1 Space Exploration (p31 32) Home: Memory foam, – kg of a gas turning in cordless vacuum cleaners. to a liquid. (a) 7.9 x 105 N Industry: Lubricants, food The energy required to The weight of the space safety. change 1 kg of a solid in shuttle decreases. Medicine: Infrared ear to a liquid OR the This is because: thermometers, artificial energy given out by 1 is less mass due to limbs. kg of a liquid turning in fuel being used up. Transport: Anti-icing to a solid. The shuttle is getting systems, improved tyres. further away from the (a) Melting surface of the Earth. Evaporating Freezing 1.35 x 106 N Condensing 2.51 x 1011 J The stearic acid is changing state from solid to liquid. Disagree. High specific heat capacity is required to stop (a) 148 500 J the surface of the tiles 237 000 J increasing in temperature 0.8 kg by too much. 1.3 kg 0.25 x 105 J kg-1 753 °C 2.67 x 105 J kg-1 Silica. It has a low density, (a) 133 600 J a high specific heat 904 000 J capacity and a high melting point. (a) 904 000 J 133 600 J Astronomers get a more detailed image of a planet 0.9 kg than can be seen with the naked eye. Helps give a (a) 3.77 x 105 J kg-1 better idea of how the Carbon Dioxide solar system was created. 389 160 J Telephones, television, GPS, etc. (a) 5.35 x 106 J kg-1 The experimental The Earth’s atmosphere is larger. This is because can’t distort an image seen some of the heat by the Hubble space energy is being used to telescope. change the temperature of the
(a) The energy required to change 1 kg of a liquid in to a gas OR the energy given out by 1 kg of a gas turning in to a liquid. The energy required to change 1 kg of a solid in to a liquid OR the energy given out by 1 kg of a liquid turning in to a solid. (a) Melting Evaporating Freezing Condensing The stearic acid is changing state from solid to liquid. (a) 148 500 J 237 000 J 0.8 kg 1.3 kg 0.25 x 105 J kg-1 2.67 x 105 J kg-1 (a) 133 600 J 904 000 J (a) 904 000 J 133 600 J 0.9 kg (a) 3.77 x 105 J kg-1 Carbon Dioxide 389 160 J (a) 5.35 x 106 J kg-1 The experimental is larger. This is because some of the heat energy is being used to change the temperature of the water, rather than change its state. Space Exploration (p31 – 32) (a) 7.9 x 105 N The weight of the space shuttle decreases. This is because: is less mass due to fuel being used up. The shuttle is getting further away from the surface of the Earth. 1.35 x 106 N 2.51 x 1011 J Disagree. High specific heat capacity is required to stop the surface of the tiles increasing in temperature by too much. 753 °C Silica. It has a low density, a high specific heat capacity and a high melting point. Astronomers get a more detailed image of a planet than can be seen with the naked eye. Helps give a better idea of how the solar system was created. Telephones, television, GPS, etc. The Earth’s atmosphere can’t distort an image seen by the Hubble space telescope. Environment & Agriculture: Water purification, solar energy. Home: Memory foam, cordless vacuum cleaners. Industry: Lubricants, food safety. Medicine: Infrared ear thermometers, artificial limbs. Transport: Anti-icing systems, improved tyres.
Dynamics-and-Space-Problem-Booklet-1u9fieq.docx