3 years ago

What is heroism???plz answer

Physics

1 answer:

AnnyKZ [126]3 years ago

6 0

Answer:

heroism is great bravery..

hope it helps !

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A truck going 15 km/h has a head-on collision with a small car going 30 km/h.

deff fn [24]

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.

3 0

3 years ago

in a mass spectrometer ionized molecules are accelerated from rest through a potential difference V into a uniform magnetic fiel

strojnjashka [21]

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 = $\frac{mv2}{r}$ = $\frac{mv2}{d/2}$

For Velocity (v) :

v = $\frac{qBd}{2m}$

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,

$qV=\frac{1}{2}mv2$