Answer: B to C
Explanation: The line is curving inwards, practically calculating the stance that it had went down. If it went straight across, it stayed the same till a specific point, furthermore calculating the bent line bending upwards is actually a partial-raise, conclude points B to C is most likely an un-even balance, meaning it had went down; or decreasing. B to C is the decreasing segment of this equation/problem (question).
Answer:
It's used to indicate pressure
D.
Always use the right tool to get accurate measurements
Answer: I think the answer is D
Explanation: N/A
The work is path independent since we have a conservative force.
Thus
Answer (1)