Two long parallel wires 40 cm apart are carrying currents of 10 A and 30 A in the same direction. What is the magnitude of the magnetic field halfway between the wires?

a. 4.0 × 10^–5 T
c. 3.0 × 10^–5 T
b. 1.0 × 10^–5 T
d. 2.0 × 10^–5 T


D

Physics & Space Science

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A. 0 K B. 0 C C. 0 F D. 100 C

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When sound travels faster higher in the air than it does closer to the ground, sound bends

A) upward. B) downward. C) neither of these

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A metallic surface is illuminated with light of wavelength 400. nm. If the work function for this metal is 2.4 eV, calculate the kinetic energy of the ejected electrons, in electron-volts

What will be an ideal response?

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