If the average normal stress in both rods is not allowed to exceed 150 MPa , determine the largest mass of the chandelier that can be supported if θ = 45∘.

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

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

Which symbol in the first law of thermodynamics represents the sum of the chemical and thermal energy stored in atoms and molecules? a. q b. w c. v d. u