Answer:
Kinetic Energy and Potential Energy
Explanation:
When an object is in motion(ie.moving), it has kinetic energy. Energy stored in an object due to position and state, is called potential energy.
Answer:
E
Explanation:
burning a substance changes it chemically.
<u><em>Ponds and rivers are two types of . . . . freshwater ecosystems</em></u>
Answer : The wavelength of yellow light produced by a sodium lamp is, 
Explanation : Given,
Frequency of radiation = 
conversion used : 
Formula used :

where,
= frequency of radiation
= wavelength of radiation
c = speed of light = 
Now put all the given values in the above formula, we get:


Therefore, the wavelength of yellow light produced by a sodium lamp is, 