On a Hertzsprung-Russell diagram, where on the main sequence would we find stars that have the greatest mass?
A) upper right
B) lower right
C) upper left
D) lower left
C
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The compound Ni3Al is used to strengthen nickel based alloys used in high temperature gas turbine materials. The crystal structure of Ni3Al is a cube with Al atoms at the eight cube corners and Ni at all of the cube face centers.
(a) What is the Bravais lattice type for Ni3Al and (b) What are the atom positions?
Identical 4.0-mC charges are placed on the y axis at y = ±4.0 m. Point A is on the x axis at x = +3.0 m. Determine the electric potential of point A (relative to zero at the origin)
a. -4.5 kV b. -2.7 kV c. -1.8 kV d. -3.6 kV e. -14 kV
A conducting bar moves as shown near a long wire carrying a constant 80-A current. If a = 1.0 mm, b = 20 mm, and v = 5.0 m/s, what is the potential difference, Va?Vb?
A. ?0.24 mV B. +0.24 mV C. ?0.19 mV D. +0.19 mV E. ?0.76 mV
What current in a solenoid 15.0-cm long wound with 100 turns would produce a magnetic field equal to that of the Earth, 5.00 × 10?5 T?
What will be an ideal response?