PART A)
magnetic field lines always originates from North pole and terminates at south pole
So here the two poles will attract each other and field lines are shown in the figure
Part B)
As we know that magnetic field lines originates from north pole and terminates at south pole so here upper end is north pole and lower end is south pole
Answer:
I think it is O only nonliving
Answer:
MgO
Explanation:
A magnesium ion has a charge of +2 and an oxygen ion has a charge of –2.
Molecule made by ions is neutral . In case of Magnesium oxide molecule it is possible only when on magnesium ion and one oxide ion join together to form molecule . The total charge of molecule will be + 2 - 2 = 0 . In this way molecule formed becomes neutral . Hence formula of magnesium oxide is
MgO .
Answer: Statement 1 is incorrect.
Reason:
Unit of measure of angular distance is not meters.
Explanation:
The term 'angular size' is used to describe the apparent size of the objects in the night sky.
The angular distance is defined as the angle through which an object moves on a circular path. The SI unit is radian.
Other units are revolution (rev) and degrees.
In statement 1, angular distance is measured in meters which is incorrect. In other options, there is no factual mistake so they are correct.
Let's discuss them,
Statement 2:
Here, we are talking about the use of outstretched hand to estimate the angular distances and sizes which is correct.
Statement 3:
This statement talks about the same angular sizes of the sun and the moon, here the term is again used correctly.
Statement 4:
Here, the angular distance is measured in the correct units i.e, degrees so this statement is also correct.