what is an example of a scientific theory explanation of why lightning travels through the air?
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what is an example of a scientific theory explanation of why lightning travels through the air?
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- HelpElectric power is defined by the equation that P = VI, where P stands for power, V stands for voltage, and I stands for current. Using Ohm's law, V = IR, we can substitute for voltage to write the equation for electric power in terms of current as P = I2R. What is the equation for current in terms of power?A bottle containing 3 kg of water at a temperature of 20 degrees Celsius is placed in a refrigerator where the temperature is kept at 3 degrees Celsius. How much heat is transferred from the water to cool it to 3 degrees Celsius?
- Bob heats up a bottle of milk for his baby, Jill, every morning. Jill will only drink the bottle if it is at 98 degrees. So Bob places the bottle in a cup of hot water (170 degrees). The bottle starts off at 35 degrees. After 2 minutes the bottle is 80 degrees. Use Newton's heating-cooling law, that the rate of change in the temperature, H, is proportional to the difference between the object and the surrounding temperature, to determine how long Bob should leave the bottle in the hot water. Assume that the water stays at 170 degrees.A heater raises the temperature of air in a room from 22 °C to 37 °C with the energy of 7500 J. If the mass of the air is 5 kg, the specific heat capacity of the air would beA 83.3 kg mass of copper is melted to be cast into a graphite mold at a copper pipe foundry. If the solid copper starts off at the normal melting temperature of copper and the liquid copper is put into the mold at the crystallization point of copper, how much heat is added to melt the copper?
- The energy used by a 100 watt light bulb in 1 hour isPlease show formula and units used. Question is belowOne gram of water and 1 gram of soil (“land”) are at a temperature of 20°C (68°F). If 5 calories of heat are added to each, what will be the temperature of the water and what will be the approximate temperature of the soil?
- The forecast for the town of Kalamazoo is for a high of 40°F. The forecast for the town of Veracruz is for a high of 40°C. Which town will have warmer weather? Kalamazoo OR Veracruz Which town will the air molecules be moving faster, on average? Kalamazoo OR VeracruzThe temperature on a winter day is 14 ° F. What is the temperature in degrees Celsius?What is the cost of operating a 84.87-Watt freezer for a month if the cost of electricity is $ 0.04 per kWh? Assume we take a month as 30 days.