A current-carrying wire of length 50 cm is positioned perpendicular to a uniform magnetic field. If the current is 10.0 A and it is determined that there is a resultant force of 7.5 N on the wire due to the interaction of the current and field, what is the magnetic field strength?
a. 1.8 × 10^–3 T
c. 6.7 × 10^–3 T
b. 1.5 T
d. 0.60 T
B
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Motional Emf: As shown in the figure, a straight wire carries a steady current I. A metal bar is in contact with a pair of rails and is in upward motion with velocity of magnitude ?. The polarity of the induced emf in terminals X and Y is
A. X and Y are at the same potential. B. X is positive and Y is negative. C. Y is positive and X is negative.
What is the total translational kinetic energy in a test chamber filled with nitrogen (N2 ) at 2.16 × 105 Pa and 20.7°C?
The dimensions of the chamber are 4.00 m × 5.70 m × 7.40 m. The ATOMIC weight of nitrogen is 28.0 g/mol, Avogadro's number is 6.022 × 1023 molecules/mol and the Boltzmann constant is 1.38 × 10-23 J/K.
The peak wavelength in the continuous emission spectrum of a body is inversely proportional to its ____________________
Fill in the blank(s) with correct word
What is the formula of a compound formed from the ions M3+ and X3-?
a. M2X b. MX c. M2X3 d. MX2