Number of Atoms for elements,
Nitrogen (N) = 1
Hydrogen (H) = 3
Answer:
Earth's atmosphere is a mixture of nitrogen (79%), oxygen (20%), and a small fraction of carbon dioxide, water vapours and other gases. However, the atmospheres on Venus and Mars mainly consist of carbon dioxide.
Explanation:
Answer:
C
Explanation:
through the desk....here desk is the student's medium to hear the sound. its oblivious because when he lifts his head away from the desk he hears nothing else
Answer:
The radius of the sphere is 4.05 m
Explanation:
Given;
potential at surface, 
= 450 V
potential at radial distance, 
= 150
radial distance, l = 8.1 m
Apply Coulomb's law of electrostatic force;
Therefore, the radius of the sphere is 4.05 m
round the corners of the magnet that where it is stronger
hope this helps :)
