Answer:
The radius is 
Explanation:
From the question we are told that
The current is 
The magnetic field is 
Generally the magnetic field produced by a current carrying conductor is mathematically represented as
=> 
Here 
is the permeability of free space with value 
=> 
=>
Answer:
Electric and magnetic fields:
Maxwell's equations tell us that
a changing magnetic field creates a changing electric field and
a changing electric field creates a changing magnetic field
Please find attached photograph for your answer. Hope it helps. Please do comment.
Answer:
Wolves are a keystone species because they are so important to the ecosystem that their removal causes a catastrophic disequilibrium.
Explanation:
Wolves are the predators available in the environment but they exist in relatively less number while comparing it with another species of animals. Wolves influence their pray which are influenced by plants. Thus, They are so important to the ecosystem that their removal causes a catastrophic disequilibrium.
Answer:
Being environmentally friendly means having a lifestyle that is better for the environment
