Activity for harmony
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #292782 | Initial revision | — | about 1 month ago |
| Answer | — |
A: Structural analysis of a wooden board and dowel Your list of potential failure modes seems pretty comprehensive. The dowel could shear, rip through the wood, or the board itself might break. To determine which will happen first, you need to consider the shear strength of the dowel and the tensile strength of the wood. Calculate the forces acting o... (more) |
— | about 1 month ago |
| Edit | Post #292780 | Initial revision | — | about 1 month ago |
| Answer | — |
A: Should (lone) black holes emit gravitational waves? You're not far off, but there are a few key points to clarify. Hawking radiation is a result of quantum mechanics in curved spacetime and isn't predicted by general relativity alone. GR doesn't account for radiation from black holes; that's where quantum field theory comes in. Regarding gravitatio... (more) |
— | about 1 month ago |
| Edit | Post #292779 | Initial revision | — | about 1 month ago |
| Answer | — |
A: Why does tension change from 15 N to 17 N when forces are replaced by weights? The increase in tension from 15 N to 17 N happens because when you introduce masses and place them over a pulley, the dynamics of the system change. Without the pulley, forces directly oppose each other, and the tension matches the smaller force. However, adding masses introduces gravitational force,... (more) |
— | about 1 month ago |