I am 11 year old and I don't known the answer to this question
Answer:
to produce electricty three ways you have the water wheel the wind mill and solor panels
Explanation:
Answer:
The first source of energy in a food chain is producer.
Explanation: In the food chain, the producer will be a plant that a primary consumer, a herbivore eats. The herbivore gets eaten by a secondary consumer, carnivorous. When the carnivore dies, it becomes energy for a decomposer.
Answer:
649.8420 nm
Explanation:
We have given 
we have to find unknown wavelength that is 
The condition for constructive interference is 
Where d is distance between slits
is angle of emergence and n is order of maxima
Using constructive interference equation
---------eqn 1
---------eqn 2
On dividing eqn 1 by eqn 2

