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1. How much energy is transformed by an electric lamp in 100 s if a current of 0.22 A flows through it when it is connected to a 120 V supply?
2. A 10 V power supply pushes a current of 5.0 A through a resistor. At what rate is energy transferred to the resistor?
3. A tropical fish tank is fitted with an electric heater, which has a power rating of 30 W. The heater is connected to a 12 V supply. What current flows through the heater when it is switched on?
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Physics, 21.06.2019 18:10, Alexmills6093
Keneila is attempting to ski down a 20 m high friction free hill for the first time. she has a speed 10 m/s at the top. what is her kinetic energy when she is a the bottom, 20 m ? (a)2500 j (b)9800 j (c)12300 j (d)3100j (e)15000j
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Physics, 21.06.2019 20:20, jazmaine1217
When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation
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Physics, 22.06.2019 06:30, jordanbyrd33
Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
Answers: 1
Physics, 22.06.2019 18:40, mckennacwilliams
Smallest intensity of a stimulus that you can detect 50 percent of the time is
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