A singly charged ion (q=−1.6×10−19) makes 7.0 rev in a 45 mT magnetic field in 1.29 ms. The mass of the ion in kg is

Explanation:

Given that,

Charge,

Revolution = 7 rev

magnetic field, B = 45 mT

Time, t = 1.29 ms

We need to find the mass of the ion. Let m be the mass. The formula for the mass in terms of time period is given by :

So, the mass of the ion is equal to .

b

explanation:

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

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