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A 0.030 kg lead bullet hits a steel plate, both initially at 20?C. The bullet melts and splatters on impact. Assume that 80% of the bullet’s kinetic energy goes into increasing its temperature and then melting it.
a) How much heat is required to increase the temperature of the lead bullet and melt it?b) What is the minimum speed the lead bullet must have in order to melt on impact?c) What happens to the remaining 20% of the bullet’s kinetic energy?
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A common flashlight bulb is rated at 0.300 A and 2.60 V, what is the temperature of the filament when the bulb is on? Calculate in deg Celsius
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Two forces FA and FB are applied to an object whose mass is 5.43 kg. The larger force is FA. When both forces point due east, the object's acceleration has the magnitude of 1.40 m/s2. Though, as FA points due east and FB points due west, the accelera..
If the final temperature of the system is 22.0?C, what is the mass m of the water that was initially at 80.0 ?C
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