Thử vận tốc trong dao động điều hoà âm hay dương

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2