Answer:i know its not b for sure i checked
Explanation:
The change from a high to a low pitch is a phenomenon known as the Doppler Effect or the Doppler shift. Sounds come in waves and are known as sound waves.
The Doppler Shift or effect is relevant to the location of the person who is hearing the sound. When a person is moving closer to the source of the sound, the wavelengths become shorter and they become low pitch; but when the person moves away from the source of the sound, the wavelengths become longer and become high-pitched.
Answer:
Heat pump
Explanation:
heat pumps reverse the normal flow of thermal energy and are part of refrigerants and air conditioners. This is a device that transfers the heat from source to sink.
How the work?
They move thermal energy in a direction that is just opposite to its spontaneous heat transfer. They absorb the heat energy from cold space and then discharge that heat into a warm space.They use external power to do the heat transfer work.
Major components:
- A condenser,
- Expansion valve
- Evaporator
- Compressor.
- And lastly, a medium through which heat transfer occurs called refrigerant.
Hope it helps! :)
Answer:
300L
Explanation:
So basically 3.9 L is equivalent to 3900 Kg of glucose and when u minus 3900 to 144 is basically 3000 which is 300L
Answer:
The negative effects of the destruction on the global environment as well as on the local environment are the following :
1) If forests are destroyed for making commercial area, the habitat of animals are also destroyed.
2) Forest helps in the cleaning of environment by consuming carbondioxide and releasing oxygen. If destruction of forest occurs, the environment remains polluted.