Answer:
True.
Explanation:
The given statement is true that the law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.
According to this law, the forces between two masses can be calculated by the product of their masses and divided by the square of the distance between them. Mathematically, it can be written as :
G is universal gravitational constant
Hence, the given statement is true.
Answer:
Explanation:
Given
charge on alpha particle=+2e
mass of alpha particle= kg
Charge on gold nucleus=+79e
Velocity at r=1m is
Using Energy conservation
Kinetic energy of particle will be converting to Potential energy as it approaches to nucleus
therefore
on solving we get
Answer:
Explanation:
Given
Initial angular speed is
Final angular speed is
Time period
Magnitude of the fan's acceleration is given by
Insert the values
Thus, fan angular acceleration is