In FCC metals at low temperatures, screw dislocations can circumvent obstacles by _________.
Fill in the blank(s) with the appropriate word(s).
cross slip
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In a demonstration, a 4.00 cm2 square coil with 10,000 turns enters a larger square region with a uniform 1.50-T magnetic field at a speed of 100 m/s. The plane of the coil is perpendicular to the field lines. If the breakdown voltage of air is 4000 V/cm on that day, the largest gap you can have between the two wires connected to the ends of the coil and still get a spark is
A. 7.5 × 10?3 cm. B. 0.015 cm. C. 7.5 cm. D. 13 cm. E. 15 cm.
A car travels along the perimeter of a vertical circle (radius = 0.25 km) at a constant speed of 30 m/s. What is the magnitude of the resultant force on the 60-kg driver of the car at the lowest point on this circular path?
a. 0.37 kN b. 0.80 kN c. 0.22 kN d. 0.59 kN e. 0.45 kN
The origin of Earth's oceans is from
A) comet debris. B) melting of polar ice caps. C) volcanic eruptions. D) comets and volcanic eruptions.
Identify a true statement about the Sun
A) It is the smallest star in the Universe. B) It is at a distance of 2 AU from Earth. C) It shines by reflecting light from the Moon. D) It generates its own energy.