Acharge of −8.3 μc is traveling at a speed of 7.4 × 106 m/s in a region of space where there is a magnetic field. the angle between the velocity of the charge and the field is 52°. a force of magnitude 5.4 × 10−3 n acts on the charge. what is the magnitude of the magnetic field?

The magnitude of the magnetic field is  

Explanation:

Given charge q = −8.3 μC

speed of charge

Angle between magnetic field and the velocity of charge

Strength of magnetic force on charge

Let magnitude of magnetic field be B

Since the magnetic force on a free moving charge in the magnetic field given by

=>

=>

Thus the magnitude of the magnetic field is  

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answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .