A force called the effort force is applied at one point on the lever in order to move an object, known as the resistance force, located at some other point on the lever
Answer: 3. No displacement, zinc is most reactive.
4. Calcium Chloride, Calcium is most reactive.
5. No displacement, Copper is most reactive
6. No displacement, Calcium is most reactive
7. Hydrogen Oxide, Hydrogen is most reactive
8. Carbon oxide, Carbon is most reactive
9. No displacement, Aluminum is most reactive
10. Potassium Kryptide + Lead, no displacement, Potassium is most reactive.
D= M/V so, D=300/40 wich is 7.5 so D= 7.5g/m3
Before it is released it as potential energy and after it has been released it transforms into kinetic energy.
Well that is because the stratosphere has lower temperatures and low air density. This gives the airplane less air pressure and with low air density they can fly faster :) Hope this helps.
