At what temperature are the numerical readings on the Fahrenheit and Celsius scales the same?
What will be an ideal response?
-40.°
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Power: If the current flowing through a circuit of constant resistance is doubled, the power dissipated by that circuit will
A. quadruple in magnitude. B. double in magnitude. C. decrease to one-half of what it was. D. decrease to one-fourth of what it was.
When a switch is closed to complete a DC series RL circuit,
A. the electric field in the wires increases to a maximum value. B. the magnetic field outside the wires increases to a maximum value. C. the rate of change of the electric and magnetic fields is greatest at the instant when the switch is closed. D. all of the above are true. E. only (a) and (c) above are true.
The magnitude of the magnetic field inside a solenoid is inversely proportional to the current flowing through the solenoid
Indicate whether the statement is true or false
Unlike spirals, elliptical galaxies do not contain a flattened disk
Indicate whether the statement is true or false