A machine can alter an input force<span> by changing its (1) magnitude, or (2) direction. All</span>machines<span> are subject to energy conservation in that no </span>machine can<span> output more energy (do more work) than the energy put into it.</span>
<u>Increase the thickness of the wire</u> would decrease the resistance in a wire
Explanation:
Thicker wires have a larger cross-section that increases the surface area with which electrons can flow unimpeded. The thicker the wire, therefore, the lower the resistance.
Thin wires have very high resistance the reason the thin tungsten in a bulb glows because it is heated from the high resistance of many electrons trying to pass through a very small cross-section.
No, interatomic bonds aren't broken during boiling.
Yes, intermolecular forces are overcome when water boils.
<h3><u>Explanation:</u></h3>
Boiling of water is a physical change of state that converts the liquid water into water vapour. This process takes place in 100°C.
In liquid water, there are different forces of attraction between the molecules of water, most importantly the van der Waal's force, and the hydrogen bonds. van der Waal's forces are very weak, so of negligible importance. But hydrogen bonding are of significant strength. They are present between the hydrogen atoms and the oxygen atoms of different molecules of water. During boiling, these forces are weakened by the increasing kinetic energy of molecules and the water molecules start to boil off as water vapour. There's no breaking of interatomic bonds, which would have produced hydrogen and oxygen gases instead of water vapour.
A toaster draws electric current ( electrical energy) from a wall outlet and converts these moving electric charges into heat (thermal energy) in the filaments that turn red hot to cook your toast. I hope that helps you