In a Certain Particle Accelerator,a Current of 300 $\mu$ A Is Carried by a 4

question 40

Multiple Choice

In a certain particle accelerator,a current of 300 $\mu$ A is carried by a 4.00-MeV proton beam that has a radius of 1.30 mm.The mass of a proton is 1.67 $\times$ 10^-27 kg.What is the number of protons per unit volume in this beam?

• A)3.64 \(\times\) 10¹³ protons/m³
• B)2.76 \(\times\) 10¹³ protons/m³
• C)1.27 \(\times\) 10¹³ protons/m³
• D)5.98 \(\times\) 10¹³ protons/m³
• E)4.17 \(\times\) 10¹³ protons/m³

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Definitions:

Ego

The ego, in psychology, represents the realistic part of the mind that mediates between the desires of the id, the moralizing role of the superego, and the external world.

Psychosexual Stages

A Freudian theory that developmental stages beginning in infancy during which the pleasure-seeking energies of the id become focused on certain erogenous zones.

Pleasure-Seeking Energies

Pleasure-Seeking Energies involve the basic drives and instincts that compel individuals to seek out experiences or objects that provide gratification and enjoyment.

Conflict

A situation or process in which individuals, groups, or interests are in opposition, leading to disputes or confrontations.