Hope this helps!
https://youtu.be/MT5tKijKZwQ
Answer:
Activity 1: Since the only forces apposing the upward movement of the load are gravity and air resistance the formulas of which can both be solved with weight then with constant variables for gravity and air, effort IS directly proportional to weight.
Activity 2:
Inclined plane.
to make lifting easier; raising or lowering a load.
Explanation:
hope this helps.
C6H12O6, MgCL2, NaCl are compounds
Pb is element
O2 is neither compound nor element, it's a molecule. But if must need to categorize it, then you can consider it in element, but remember it's not an element
It's C. but come on, use some common sense.
