A single resistor is connected across the terminals of a battery. Which one or more of the following changes in voltage and current leaves unchanged the electric power dissipated in the resistor? (Show work) (A) Doubling the voltage and increasing the resistance by a factor of four (B) Doubling the voltage and the current (C) Doubling the voltage and reducing the resistance by a factor of four (D) Doubling the current and reducing the resistance by a factor of four (a) All (b) A, C, D only (c) B, C, D only (d) A and D only
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Physics, 22.06.2019 00:00
What type of nuclear decay causes the atomic number of an element to increase by 1?
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Aballet student who learns with the of his instructor is demonstrating learning.
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Physics, 22.06.2019 15:10
In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_
Answers: 3
Physics, 22.06.2019 18:10
Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)
Answers: 1
A single resistor is connected across the terminals of a battery. Which one or more of the following...
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