Which type of investigation is lised to compare two subiects?

A circular loop of wire having a radius of 5.58 cm carries a current of 0.230 A. A vector of unit length and parallel to the dip

Sidana [21]

Answer:

see explanation

Explanation:

Given quantities:

radius = r = 0.0558 [m]

current = I = 0.23 [A]

$\vec{B} =$

Now we solve this by obtaining the torque acting on the dipole

$\tau = M \times B$

We obtain the magnetic moment vector M, first, |M| is defined as $M = IA$ , where A is the cross-section area of the loop which is $A = \pi r^2=\pi (0.0558)^2= 0.00978 [m^2]$ then

$|M| = 0.23*0.00978 = 0.00225 [A/m^2]$

now the magnetic moment vector is equal to the magnetic dipole moment vector multiplied the magnitude we just obtained $\vec{M} = M \hat M$

$= 0.00225 *$

Now:

a ) $\tau = M \times B$

b) $U = -M \cdot B$

a) the determinant gives us:

b) the dot product gives = $-1*-7.2*10^{-6} = 7.2*10^{-6}[J]$

6 0

3 years ago

What is unit of pressure?why is it called a derived unit ? give reasons

olga55 [171]

pascal is the unit of pressure

The units of pressure is called derived units because it is simply derived from base unit which is distance and a derived unit which is force, which is derived from acceleration, a derived unit as well, and mass, a base unit. As we all know, work is defined as the force x distance. Thus making work a derived unit.Jun 23, 2020

7 0

3 years ago

An object of mass m is dropped from height h above a planet of mass M and radius R. Find an expression for the objectâ€™s speed

Oksana_A [137]

Answer:

Explanation:

Given

mass of object is m

Mass of planet is M

radius of planet is R

Total Energy associated with mass m at a height h above planet is Gravitational Potential Energy which is given by

$E_1=-\frac{GMm}{R+h}$

When it falls on earth with some velocity v

$E_2$ =Kinetic Energy+Potential Energy

$=\frac{1}{2}mv^2+\frac{-GMm}{R}$

As Energy is conserved therefore

$=E_2$

$\frac{-GMm}{R+h}=\frac{1}{2}mv^2+\frac{-GMm}{R}$

$\frac{1}{2}mv^2=\frac{GMmh}{R(R+h)}$

$v=\sqrt{\frac{2GMh}{R(R+h)}}$

6 0

3 years ago

Which of these is an experiment generally regarded as being first carried out by James Joule?

Sholpan [36]

1. The correct answer among the choices provided is the third option. Measuring the temperature increase of water from doing work by stirring it is an experiment generally regarded as being first carried out by James Joule.
2. Joule's experiment directly shows that heat is a form of energy. He wanted to make a different way of measuring energy.

8 0

4 years ago

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Kenny and Chris are walking down the road. They walk a distance of 250meters in

ruslelena [56]

Explanation:

Distance is 250m

Time is 50sec

Formular

Speed= distance/time

Speed=250/50

Speed is 5m/s

If correct mark as brainliest

7 0

3 years ago

Read 2 more answers