travel through a vacuum at the speed of light. Other waves need a medium; sound waves need molecules that vibrate.
Answer:
240 m
120 m
Explanation:
d = Path difference = 120 m
For destructive interference
Path difference
The longest wavelength is 240 m
For constructive interference
The longest wavelength is 120 m
Yes, it is diffusion !
Diffusion is the process in which gas, through random movement of particles, tends to fill up the whole volume of the container in which it is placed. So a similar process would lead the smoke, which is in form of gas (or light particles), to fill in the whole room in which it is contained.
If only internal forces are doing work (no work done by external forces), then there is no change in the total amount of mechanical energy. The total mechanical energy is said to be conserved. ... In these situations, the sum of the kinetic and potential energy is everywhere the same.
Answer:
Explanation:
-Governments create public policy to address issues in social, economic, and foreign relations.
-This policy model solves all the related problems effectively while supporting and serving the government’s policies.
-The characteristics of Public Policy may include:
- A response to some crisis or issue that requires attention.
- Aims at achieving certain development goals or solution to a problem.
- Public policy is carried or done on behalf of a country's citizenry.
