Explain why the viscosity of a liquid decreases with temperature that is, how might increased temperature reduce the effects of cohesive forces in a liquid? Also explain why the viscosity of a gas Explain why an induced current must flow in such a direction so as to oppose the change pr...
How does convection work? Explain how Faraday's Constant works in electrolytic cells. Why iron smelting is a physical process? How does the graph of conductivity vs temperature look for metals and semiconductors? (a) Explain what characteristics of metalloids are more like metals. ...
What we've done here is pass an electric current through empty space from one coil of wire to another. This is called electromagnetic induction because the current in the first coil causes (or "induces") a current in the second coil. We can make electrical energy pass more efficiently from...
- Ovens: Eco-friendly ovens, such as convection ovens, cook food more evenly and quickly, reducing cooking time and energy consumption. - Freezers: Energy-efficient freezers maintain lower temperatures with less energy, which is beneficial for both the environment and the user. 5. Conclude the ...
Free convectionis based on an difference in density. What is colder is typically denser, so gravity forces it downwards, displacing what is hotter (and less dense) upward (This should not be confused withforced convection, which uses fans or other devices that are not practical to build on ...
The nature of Fermi bubbles is still unclear, however the location of these objects indicates their connection to past or present activity in the center of the galaxy, where a central black hole of 106 solar masses is believed to be located. Modern models relate the bubbles to star formation...
What do you understand by the free convection boundary layer and how does it affect heat transfer? An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not? Mountain roads are curved and not straight up the slope,...