Answer: Congenital diseases are those diseases that are present in the child from birth. Common examples include Cystic fibrosis, Down syndrome, and Haemophilia. Degenerative A disease in which the function or structure of the affected tissues or organs changes for the worse over time. Osteoarthritis, osteoporosis, and Alzheimer's disease are examples.
Explanation:
Answer:
When the sound wave enters the water its wavelength increase.
Explanation:
Given:
Speed of sound in air 
Speed of sound in fresh water 
We know that when wave travel into one medium to another medium frequency doesn't change.
Velocity is given by,
In above equation frequency is constant,
So when sound wave enters the water wavelength increase because speed sound is increase in water as compare to air.
Therefore, when the sound wave enters the water its wavelength increase.
I suppose they can all be classified as compounds
Answer:
Equilibrium
Explanation:
An object is in equilibrium when the vector sum of the force acting on the object is equal to zero.
A body in equilibrium is at state of rest of rest or in motion with no external force acting on it.
- The resultant of all forces acting on the body is zero.
- In this case there is no net force and the body will be at rest.
The normal force acts to counter the gravitational force, that is the upward direction.
