Answer
The velocity of the bird is 2 m /sec .
Explanation:
The formula for kinetic energy is given by.
Where m is mass , v is the velocity .
As given
A 4.0 kg bird has 8.0 joules of kinetic energy .
m = 4.0 kg
K.E = 8.0 joules
Putting in the formula
Thus
v = 2 m/sec
Therefore the velocity of the bird is 2 m /sec .
The equivalent capacitance between A and B points is 2.5F.
<h3>What is parallel plate capacitor?</h3>
The two parallel plates placed at a distance apart used to store charge when electric supply is on.
The capacitance of a capacitor is given by
C = ε₀ A/d
From the given circuit C1, C2 and C3, C4 are in parallel C1=4F, C2=4F, C3=2F, C4=4F, C5= 9.2 F
C1, C2 = 4 +4 =8F
C3, C4 = 2 +4 =6F
Now , all capacitors are in series.
Total equivalent capacitance is
1 / Ceq = 1/ 8 +1/6 +1/ 9.2
Ceq = 2.5 F
Thus, the equivalent capacitance between A and B points is 2.5F.
Learn more about parallel plate capacitor.
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Answer:
B. A object in motion stays in motion, and an object at rest stays at rest unless acted upon by a net force.
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