How many excess electrons make up the charge
A 2.5g copper penny is given a charge of -0.50 mC.
How many excess electrons make up this charge?
What is the percentage of the mass of these excess electrons to the mass of the penny?
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A 95.0-kg fullback moving south with a speed of 5.0 m/s has a perfectly inelastic collision with a 90.0 kg opponent running directly at him with a speed of 3 m/s. Calculate the decrease in total energy as a result of this collision.
How many excess electrons make up this charge? What is the percentage of the mass of these excess electrons to the mass of the penny?
In a particular region of Earth's atmosphere, the electric field above Earth's surface has been measured to be 140 N/C downward at an altitude of 240 m and 167 N/C downward at an altitude of 390 m.
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For an object with a coefficient of 0.63, what fraction of the object's kinetic energy is lost during a single collision?
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