What are the differences between balloon framing and platform framing? What are the advantages and disadvantages of each? Why has platform faming become the method of choice? Why is little added fire stopping required in platform framing?
Why is a steel beam or glue-laminated wood beam preferred to a solid wood beam at the foundation level?

Why there is no inductive reactance in dc circuits

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question