Eventually all the ice changed to a gas. Figure 2 shows how the temperature changed over 800 seconds.
Figure 2
200
150
100
Temperature
in C
50
0
600
800
700
100
200
300
400 500
Time In seconds
50
(e) What change of state occurs between 200 seconds and 750 seconds?
0
Explain how Figure 2 shows that the specific latent heat of vaporisation is greater than the
specific latent heat of fusion.
Use data from Figure 2.
(Total 10 marks)

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?