Answer:
the product of mass and velocity
....in my syllabus
Answer:The Atwood Machine is a device that demonstrates the basic principles of acceleration and dynamics. You'll mostly see Atwood machines in Physics laboratories and classrooms. It consists of two objects with different masses that hang vertically from a frictionless pulley that has a very small, negligible mass.
Explanation:
Answer:
showm
Explanation:
Consider a dipole having magnetic moment 'm' is placed in magnetic field
then the torque exerted by the field on the dipole is
![\tau = m\times B](https://tex.z-dn.net/?f=%5Ctau%20%3D%20m%5Ctimes%20B)
![\tau=mBsin\alpha](https://tex.z-dn.net/?f=%5Ctau%3DmBsin%5Calpha)
Now to rotate the dipole in the field to its final position the work required to be done is
![U=\int \tau d\alpha](https://tex.z-dn.net/?f=U%3D%5Cint%20%5Ctau%20d%5Calpha)
![U=\int mBsin\alpha d\alpha](https://tex.z-dn.net/?f=U%3D%5Cint%20mBsin%5Calpha%20d%5Calpha)
![U= -mBcos\alpha](https://tex.z-dn.net/?f=U%3D%20-mBcos%5Calpha)
![U=-\vec{m\times \vec{B}}](https://tex.z-dn.net/?f=U%3D-%5Cvec%7Bm%5Ctimes%20%5Cvec%7BB%7D%7D)
Minimum energy mB is for the case when m is anti parallel to B.
Minimum energy -mB is for the case when m is parallel to B.
<h2>Answer: Albedo
</h2>
The <u>albedo</u> is an amount that expresses the percentage of radiation a surface reflects with respect to the incident radiation.
In other words:
This amount allows us to know the level of radiation that <u>reflects</u> a surface compared to the total <u>radiation it receives</u>.
According to this, light surfaces such as snow covered ground or white sand will have a higher albedo than dark surfaces such as carbon covered ground. It is also important to note, the albedo will be higher on glossy surfaces than on matte surfaces.
It should be noted that the albedo of the Earth is on average about
, which means that part of the radiation received by the Sun is absorbed and another part reflected back to space.
Answer:
Change in the shape size volume and state of a substance
When a solid is heated, it turns into a liquid. As a liquid, a substance has a fixed volume, but its shape changes to fill the shape of its container. For instance, a glass of water is the liquid state of water. ... Gas expands to fill the shape and volume of its container.
Explanation: