A Proton, with Mass 1

question 11

Short Answer

A proton, with mass 1.67 × 10^-27 kg and charge +1.6 × 10^-19 C, is sent with velocity 7.1 × 10⁴ m/s in the +x direction into a region where there is a uniform electric field of magnitude 730 V/m in the +y direction. What are the magnitude and direction of the uniform magnetic field in the region, if the proton is to pass through undeflected? Assume that the magnetic field has no x-component and neglect gravitational effects.

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Definitions:

Antigen-presenting Cells

Specialized immune cells that capture antigens and present them on their surface to T-cells, initiating an immune response.

Helper T Cells

White blood cells that play a critical role in the immune system by activating other immune cells to fight off infections.

Cytokines

Small proteins released by cells that have a specific effect on the interactions and communications between cells, often involved in immune responses.

Antigens

Substances that are recognized by the immune system and can elicit an immune response, often foreign proteins or polysaccharides found on pathogens.