Answer:
Under normal conditions, a magnetic material like iron doesn't behave like a magnet because the domains don't have a preferred direction of alignment. On the other hand, the domains of a magnet (or a magnetized iron) are all aligned in s specific direction.
Answer:
good question, did you press any certain buttons?
Explanation:
Answer:
Explanation:
The incident angle is 
so the reflected ray will also be .
The normal divides the angle between the incident and reflected ray. So, the angle between them would be
So, the angle between the incident and reflected rays is .
Answer:
= 3.869 × 10^-6 J/m³
Explanation:
Intensity is given as W/m^2 which is equivalent to J/ (s*m^2)
Speed of light is 2.99792 × 10^8 m/s.
Therefore;
Electromagnetic energy per cubic meter = Intensity/speed of light
= 1160 J/ (s*m³)/ 2.99792 × 10^8 m/s.
<u>= 3.869 × 10^-6 J/m³</u>
Mass is a property of an object. It doesn't change, no matter where the object is.
Weight is the gravitational force between two objects. It depends on the masses
of both objects, and also on the distance between their centers, so it changes,
depending on the mass of the OTHER object involved, and on the distance
between them.
