At the ultimate tensile strength, the slope of the engineering stress-strain diagram is equal to _____________.
Fill in the blank(s) with the appropriate word(s).
zero
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Two long parallel wires carry unequal currents in opposite directions. The ratio of the currents is 3 to 1. The magnitude of the magnetic field at a point in the plane of the wires and 10 cm from each wire is 4.0 ?T. What is the larger of the two currents?
A. 0.5 A B. 1.0 A C. 1.5 A D. 2.0 A E. 3.0 A
Heat energy will spontaneously always flow in the direction of ________
a. a higher temperature b. a lower temperature c. up, since heat rises d. a smaller heat capacity
Which has a greater buoyant force?
1) a huge lead zeppelin 2) a small helium-filled balloon 3) both 4) neither because 5) of its low density. 6) it occupies the greatest amount of space. 7) it occupies the least amount of space. 8) both have comparable densities.
A 7.5-kg otter slides down a hill, starting from rest at the top. The sloping surface of the hill is 8.8 m long, and the top is 6.5 m above the base
If the speed of the otter at the bottom of the hill is 9.2 m/s, how much energy was lost to nonconservative forces on the hill?