The work done on a body when it is moved is 125J
<h3>What is Work energy theorem?</h3>
It states that the Work done in moving a body is equal to the change in kinetic energy of the body
Kinetic energy = 1/2 mv²
Given is a body of mass m = 6kg, moving distance d =25 m in time t=5s.
Final Velocity v = 25/5 = 5 m/s
The body is initially at rest, so, final velocity is zero. Then, change in kinetic energy will be
ΔK.E = K.Ef - K.Ei
ΔK.E = 1/2 x 6 x (5)² -0
ΔK.E =125J
According to work energy theorem, work done is
W = 125J
Thus, the work done on a body when it is moved is 125J.
Learn more about work energy theorem.
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The Correct answer is (B), Because the reject each other.
All metals are good conductors.
Hope that helped you.
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Answer:
A = 5.6μs
B = 178.57kHz
C = 2.8μs
Explanation:
A. It takes ¼ of the period of the circuit before the total energy is converted from electrical energy in the capacitor to magnetic energy in the inductor.
t = T/4
T = 4*t
T = 4 * 1.4 = 5.6μs
B. f = 1/T
Frequency is the inverse of period
f = 1 / 5.6*10⁻⁶
f = 178571.4286Hz
f = 178.57kHz
C. time taken for maximum energy to occur is T/2
t = 5.6 / 2 = 2.8μs