If the direction of v⃗ ′ is reversed, so both charges are moving in the same direction, what is the magnitude of the magnetic forces that the two charges exert on each other?

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?

What is the major limitation to the light microscope?

What can you increase the strength of an electromagnet by