A titanium bar (E 5 100 GPa, ? 5 0.33) with square cross section (b 5 75 mm) and length L 5 3.0 m is subjected to tensile load P 5 900 kN. The increase in volume of the bar is approximately:
(A) 1400 mm3
(B) 3500 mm3
(C) 4800 mm3
(D) 9200 mm3
(D) 9200 mm3
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What is spacetime?
A) It's the inseparable combination of space and time. B) It's time that we measure when traveling in space. C) It's a graph with four axes. D) It's a way of viewing books at different angles.
During each cycle of operation a refrigerator absorbs 55.0 cal from the freezer compartment and expels 88.0 cal to the room. If one cycle occurs every 10 s, how many minutes will it take to freeze 575 g of water, initially at 0°C? (Lv = 80 cal/g)
a. 69.7 min b. 1 390 min c. 139 min d. 87.1 min e. 836 min
A moving electric charge or a current in a magnetic field may experience a(n) ______________
Fill in the blank(s) with correct word
It is summer in the Northern Hemisphere when
A) the Northern Hemisphere is located closer to the Sun than the Southern Hemisphere. B) the Northern Hemisphere is tilted toward the Sun and the Southern Hemisphere is tilted away. C) Earth is at its nearest point to the Sun along its orbit. D) Earth's axis points toward the North Star, Polaris.