![\"\"](\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysu2hwrk\/uploads\/sites\/5086\/2014\/10\/ElecEn-1_11a.jpg\" "\\"ElecEn")
<\/a>2. Explain, using kinetic theory, how the air in a bicycle tyre creates pressure on the inside surface of the tyre.<\/p>\n3. Why does the Kelvin temperature scale start at -273 \u00b0C?<\/p>\n
4. Convert these temperatures from degrees Celsius to Kelvin.<\/p>\n
5. A conical flask is sealed with air inside, and is placed in a heat bath. The temperature of the gas increases from 20 \u00b0C to 70\u00b0C. After every 10 \u00b0C temperature increase, the pressure of the gas is measured using a Bourdon gauge. The results are shown.<\/p>\n (a) Draw a rough graph (no values required just the shape) of pressure against temperature (in degrees Celsius).<\/p>\n (b) Draw a rough graph (no values required just the shape) of pressure against temperature (in Kelvin).<\/p>\n (c) What do these two graphs tell you about the relationship between the pressure and temperature of a fixed mass of gas?<\/p>\n (d) Explain this relationship in terms of the kinetic theory of particles.<\/p>\n 6. Explain, using the appropriate gas law, why it is important that car tyres are not filled up with so much air that the air pressure is above the car manufacturer\u2019s guidelines?<\/p>\n 7. At a temperature of 20 \u00b0C, the pressure of a fixed mass of gas in a sealed container is found to be 104 kPa. The gas is heated to a uniform temperature of 90 \u00b0C using a heat bath. What was the temperature of the air in the tyre at the end of the journey? Give your answer in degrees Celsius.<\/p>\n","protected":false},"excerpt":{"rendered":" 1. Explain, using the kinetic theory of particles, what happens to the particles in a liquid when it melts and becomes a gas. 2. Explain, using kinetic theory, how the air in a bicycle tyre creates pressure on the inside surface of the tyre. 3. Why does the Kelvin temperature scale start at -273 \u00b0C? … Continue reading Electricity & Energy Exercise 11<\/span> <\/a>(a) 0 \u00b0C
\n(b) 20 \u00b0C
\n(c) -273 \u00b0C
\n(d) 100 \u00b0C<\/p>\n<\/a><\/p>\n<\/a><\/p>\n
\nWhat is the pressure of the gas at a temperature of 90 \u00b0C?<\/p>\n<\/a>8. The pressure of the air in a lorry tyre is found to be 2.58 x 105<\/sup> Pa at the end of a journey.
\nOnce the tyre has cooled down, the temperature of the air inside the tyre is found to be 10 \u00b0C with the pressure decreasing to 2.41 x 105<\/sup> Pa.<\/p>\n