Answer:
A. Nuclear fusion requires very high pressures and temperatures.
Explanation:
Answer:
2. Galaxy
5. Electromagnetic radiation
7. Particle Accelerator
Answer:
The muzzle velocity of this cork is 2 m/s.
Explanation:
It is given that,
Spring constant of the spring, k = 10 N/m
Mass of the cork, m = 6 g = 0.006 kg
Initial position of the spring, x = 5 cm = 0.05 m
Final position of the spring, x' = 1 cm = 0.01 m
According to the law of conservation of energy, the initial potential energy of the spring is equal to the sum of final spring potential energy and the kinetic energy of cork such that,

v is the muzzle velocity of this cork.


v = 2 m/s
So, the muzzle velocity of this cork is 2 m/s. Hence, this is the required solution.
Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.