A bullet of mass 10 g moving at 300 m/s penetrates 10 cm into a wooden block. Average resistive force is MCQ with Answer and Explanation
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Question #1
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Which of the following is a non-renewable source of energy?
Question #2
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In a simple harmonic motion (SHM), where is the kinetic energy of the oscillating particle maximum?
Correct Answer: Option A
Explanation:
In Simple Harmonic Motion (like a swinging pendulum), velocity is maximum when the particle passes through its equilibrium or mean position. Since Kinetic Energy = ½mv², KE is maximum at the mean position. At the extreme positions, the velocity is briefly zero, meaning kinetic energy is zero and potential energy is maximum.
In Simple Harmonic Motion (like a swinging pendulum), velocity is maximum when the particle passes through its equilibrium or mean position. Since Kinetic Energy = ½mv², KE is maximum at the mean position. At the extreme positions, the velocity is briefly zero, meaning kinetic energy is zero and potential energy is maximum.
Question #3
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A body of mass m is taken from Earth's surface to a height equal to twice Earth's radius. Change in potential energy is
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