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A boy of mass 35 kg and a girl of mass 40 kg are skating towards each other with speeds of 2.5 m/s, and 2.0 m/s respectively. When they meet, they clasp hands and continue to move together.
a. Assume that there is no friction, and find their combined velocity after they meet.
b. Check if the kinetic energy is conserved in this collision. How would you classify the collision? If the kinetic energy is not conserved, find the percentage loss in kinetic energy.
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A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 cm and released. If the ball makes 55 oscillations in 20 s, what are its mass and maximum speed
q1. a discussion of why the ideal gas law is expected to fail at low temperatures and how its failure may affect your
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Write at least one paragraph in which you define focal length, object and image distance and magnification. Explain the difference between real and virtual images
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