A particle that is smaller than an atom or a cluster of particles.
I suppose right answer is d because staellite means an object that move around the larger object and Jupiter also moves around the Sun
Answer:
Explanation:
It is given that,
Radius of the circle, 
The area of the circle is given by :
or
As there is no uncertainty given in the radius of the circle. So, the area of the circle is 
. Hence, this is the required solution.
Answer:
1.11×10⁸ Electrons.
Explanation:
Applying,
Q = CV..................... Equation 1
Where Q = Total charge on the capacitor, C = Capacitance of the capacitor, V = Voltage of the battery.
Given: C = 1.97 pF = 1.97×10⁻¹² F, V = 9.0 V
Substitute this value into equation 1
Q = 1.97×9×10⁻¹²
Q = 1.773×10⁻¹¹ C.
If the charge on one electron = 1.602×10⁻¹⁹ C.
Therefore number of electron = 1.773×10⁻¹¹ /1.602×10⁻¹⁹
Number of electron = 1.11×10⁸
