Bohr explained that the electron revolve around a orbit of fixed energy level that Rutherford fails to explain !!!
Answer:
A
Explanation:
When two magnets are brought near each other, like poles repel; opposite poles attract. We like to represent this force effect of a magnet on iron-like objects with a concept called magnetic field. The concept of field can be best understood if we remember the gravitational force of Earth on object near it.
Answer:
<h2>8 kg</h2>
Explanation:
The mass of an object can be found by using the formula

f is the force
a is the acceleration
From the question we have

We have the final answer as
<h3>8 kg</h3>
Hope this helps you