If you add energy to water , you increase the temperature of water. This is why when you add so much heat to water, it will boil and become gas, as gases have more energy than liquids do, and liquids have more energy than solids do.
The independent variable in the experiment is the soap and the dependent variable in the experiment is the number of water drops on the surface of the penny. The control is the penny without soap.
Answer:
Many things, but i think a toaster...
Explanation:
<span>The equation you used is KE=hv-hv0, where h=6.63*10^-34 (constant). You multiply h by 1.5*10^15. Multiply h by the threshold freq of cesium (from part A). Subtract the second answer from the first answer, and you get the kinetic energy. Hope this helps.</span>