Apassive solar home has energy stored in a concrete floor of 1000 square feet. how thick should this floor be to store 15 btu with a temperature swing of 20 degrees f? (compute the answer in feet. if the floor should be one tenth of a foot thick, enter 0.1) (note: you'll need to find a value in your textbook for the energy storage capacity of concrete)

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

Awave that is traveling fast can be said to have a high a. frequency b. speed c. wavelength d. amplitude e. period f. none of these

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?