<span>Many scientists are studying tiny particles called nanoparticles. Since science is mainly done by working together (collaboration), I think the following best describes how the scientists are probably trying to learn about these particles:</span><span>
(A) The scientists come from varying backgrounds. They are asking different questions and designing different experiments to answer the questions.</span>
Answer:
The cooler water is denser
Explanation:
Convection drives the boiling of water placed on a stove in a kettle.
During convection, heat is circulated by density differences in portions of a fluid.
Convection is a form of heat transfer in fluids especially gas and liquid.
- In boiling water, the heat is supplied to the base of the stove.
- The water at the bottom on heat becomes lighter as the molecules gain more kinetic energy.
- The colder part of the water on top sinks to replace the less dense on below.
- This exchange sets up convection cells in the kettle.
Answer:
For work to be done there must be 2 conditions to be followed:
(i) Force must be applied
(ii) displacement in the direction of force.
So if there is no force or displacement there is no work done. Since there is no displacement, as there is no initial and final position, no work is done. If he moves to a different position, work is done.
