That does not constitute a question. Despite this, my answer is a valid one and so I hope to receive credit. Should you rephrase your question, a proper answer shall be provided.
Answer:
Potential difference = 245 V
Explanation:
First, we have to find velocity at which ionized molecules are accelerated into a magnetic field. Here, magnetic force acts as a centripetal force due to circular path of molecules towards detector slot.
- B= 0.25 T,d= 12 cm
- mass = (12+16+16)×1.67×10-27kg
Now, the magnetic force to the centripetal force equates as:
qvB =
= 
For Velocity (v) :
v = 
According to law of conservation of energy, we know that the initial potential energy of the molecules is converted into kinetic energy as they enter into the magnetic field. So,

Substitute the value of v in above equation:
qV =
m 
V = 
V= 245 V
Answer:
Yes.
Explanation:
51/17 is a rational number because "A number is considered a rational number if it can be written as one integer divided by another integer."
B is correct.
Please vote my answer brainliest. thanks!