Answer:
Explanation:Before to Rutherford, the accepted model for the atom was Thomson's model:
The atoms were a positive sphere, with electrons occupying space in it".
This was called the "plum pudding model".
Then came Ernest Rutherford, and he created a model where the atoms are mostly empty space (void) with a positive charged nucleus (really compressed in the center), and the electrons were orbiting around it.
Then the correct option is that the atom is mostly empty space.
The correct answer to
the question that is stated above is the fourth option which is :<span>Blue star.
Blue stars are uncommon but very bright. It has an average luminosity of </span>1,400,000 ( the Sun =1) with a strong UV continuum. The blue stars average mass is 60 ( the Sun =1) and its average radius is 15 <span>( the Sun =1).</span><span>
</span>
If it takes 1 year for this crab to travel 5,70km
Then, it will takes approximatly 1000/5,70 = 175 years to travel 1000 km
Answer:
Explanation:
Consider:
The equation for the Poynting vector is given as:
∴