A bar magnet whose magnetic dipole moment is 21 A·m2 is aligned with an applied magnetic field of 3.6 T. How much work must you do to rotate the bar magnet 180° to point in the direction opposite to the magnetic field?

The amount of work must be do to rotate the bar magnet is 151.2 J

Explanation:

Given:

Magnetic moment

Magnetic field T

To find work do to rotate the bar magnet,

From the formula of work done in case of magnetic field,

Here changes 0 to 180

But

    J

Therefore, the amount of work must be do to rotate the bar magnet is 151.2 J

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =