Struck by lightning. Lightning strikes can involve currents as high as 25.000 A that last for about 40 μ s. If a person is struck by a bolt of lightning with these properties, the current will pass through his body. We shall assume that his mass is 75 kg. that he is wet (after all. he is in a rainstorm) and therefore has a resistance of 1.0 kΩ. and that his body is all water (which is reasonable for a rough, but plausible, approximation), (a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water? (b) Given that the internal body temperature is about 37°C. would the person’s temperature actually increase that much? Why or why not? What would happen first?
Struck by lightning. Lightning strikes can involve currents as high as 25.000 A that last for about 40 μ s. If a person is struck by a bolt of lightning with these properties, the current will pass through his body. We shall assume that his mass is 75 kg. that he is wet (after all. he is in a rainstorm) and therefore has a resistance of 1.0 kΩ. and that his body is all water (which is reasonable for a rough, but plausible, approximation), (a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water? (b) Given that the internal body temperature is about 37°C. would the person’s temperature actually increase that much? Why or why not? What would happen first?
Struck by lightning. Lightning strikes can involve currents as high as 25.000 A that last for about 40 μs. If a person is struck by a bolt of lightning with these properties, the current will pass through his body. We shall assume that his mass is 75 kg. that he is wet (after all. he is in a rainstorm) and therefore has a resistance of 1.0 kΩ. and that his body is all water (which is reasonable for a rough, but plausible, approximation), (a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water? (b) Given that the internal body temperature is about 37°C. would the person’s temperature actually increase that much? Why or why not? What would happen first?
Lightning strikes can involve currents as high as 25,000 A that last for about 40 ms. If a person is struck by a bolt of lightning with these properties, the current will pass through his body. We shall assume that his mass is 75 kg, that he is wet (after all, he is in a rainstorm) and therefore has a resistance of 1.0 kΩ, and that his body is all water (which is reasonable for a rough, but plausible, approximation). (a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water? (b) Given that the internal body temperature is about 37oC, would the person’s temperature actually increase that much? Why not? What would happen first?
Suppose you have a rod of pure silicon with a diameter of 2.79cm and a length of 20.6cm. These rods are often used in experiments, such as the Large Hadron Collider in France/Switzerland to detect high-energy particles, and they have a very high resistivity of 2300Ω⋅m.
What current, in amperes, flows through the rod when a potential difference of 1.23* 10^3 V is applied between its ends ?
Suppose a flashlight has 6.8 × 102 C of charge pass through it during time 0.35 h.
A. What is the rate of the flashlight’s energy consumption, in watts, if it operates at a voltage of 3.00 V?
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