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Batteries consist of an ideal source of potential dissimilarity in series with a small resistance. The electrical energy of the battery is produced with chemical reactions that occur in the battery. But, these reactions also result in a small resistance that, unluckily, cannot be completely eliminated. A flashlight contains two batteries in series. Each has a potential dissimilarity of 1.50 V and an internal resistance of 0.200 \Omega. The bulb has a resistance of 22.0 \Omega.
1. How much power does the bulb dissipate?
2. Determine what is the current through the bulb?
3. How much greater would the power be if the batteries had no internal resistance?
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A force, 20N, is applied to a 2 kg block on a tabletop with a coefficient of friction of 0.3. The force is applied to the right, above the horizontal at 60 degrees.The object is pulled to the right along the surface for a distance of 5m. What work wa..
A racquetball with a diameter of 5.6 cm and a mass of 42 g is cut in half to make a boat for American pennies made after 1982. How many pennies can be placed in the racquetball boat without sinking it
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