Determine the original speeds
A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.5 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?
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A conducting rod of length 0.5 m slides along a frictionless table at a constant velocity 1.5 m/s. A uniform magnetic field of 0.75 T is normal to the surface. (a) What is the induced emf in the rod? (b) How much force is required to keep the rod
Four major theos of motion?Explain
A cubical box has six faces, each 20 cm × 20 cm. The flux through each face is (the sides are labeled like a die, sides 1 and 6 are opposite to each other, as are 2 and 5, and 3 and 4.
The nervous system has been compared to an air delivery system and the endocrine system to the pony express. Briefly explain this comparison.
A major-league catcher gloves a 76 mi/h pitch and brings it to rest in 0.15 m. If the force exerted by the catcher is 803 N, what is the mass of the ball?
What is the distance, measured along the screen, between this bright fringe and the bright fringe corresponding to m = 3?
What is the job description of a coureur de bois?
When did Jane Goodall first make physical contact with a chimpanzee?
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