F4 physic!(lens and force)
What is sharp image?
What is resultant force?
Explain them in Chinese or English.
- 天同Lv 78 年前最愛解答
Q: What is sharp image?
A: A sharp image (影像) is one that has distinct boundary.
Q: What is resultant force?
A: A resultant force is the vector sum of all involved forces when both force magnitudes and directions are taken into account in the summation.