In this ecosystem, squirrels find and eat acorns from trees. What would happen to the balance of the ecosystem if populations of
squirrels decreased?
A.) The number of acorns would increase.
B.) The number of acorns would decrease.
C.) The number of acorns would stay the same.
D.) The number of acorns would decrease and then increase.
A.) The number of acorns would increase.
B.) The number of acorns would decrease.
C.) The number of acorns would stay the same.
D.) The number of acorns would decrease and then increase.
1 answer:
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Answer:
Explanation:
Given data
Ex = Ey = 0
Ez=(4.3V/m)cos(π×10¹⁵s⁻¹)(t-x/c)
To find
The amplitude of the magnetic field component
Solution
The electric field is given by:
Ez=(4.3V/m)cos(π×10¹⁵s⁻¹)(t-x/c)
Where Em=4.3 V/m
The magnitude of magnetic field is given by:
Where Em is amplitude of electric field and c is speed of light.
Substitute the given values
So
Answer:
The two people have the same momentum.
Explanation:
Given that,
Mass of person 1 is 50 kg and he is running at 2 m/s.
Mass of person 2 is 25 kg and he is running at twice that speed i.e. 4 m/s
The momentum of an object is given by :
p = mv
For person 1,
For person 2,
So, it can be seen that both persons will have the same momentum. Hence, the correct option is (c).