Which activity is a model of thermal energy transfer by conduction? A. Freezing ice cubes in a freezer B. Using a heat lamp to warm a bathroom C. Cooking vegetables on a grill D. Using a fan to cool down on a hot day

Alow cost, low earth orbit (leo) satellite is to be fabricated at a university, for subsequent launch by rocket. what are the constraints and objectives for selection of a material suitable for the satellite bus (i.e. the structure)? explain each in brief. (15 marks) b)suggest sources of data which could support the selection of materials for applications in space. (5 marks) c) set weights for the objectives listed in (2a) using the digital logic method. (5 marks)

Asher cycles 12 miles in 16 hours. what is his speed?

If you put a helium-filled balloon in the refrigerator, what will happen?