A shear force of 400 N is applied to one face of an aluminum cube with sides of 30 cm. What is the resulting relative displacement? (The shear modulus for aluminum is 2.5 × 1010 N/m2)
A) 1.9 × 10-8 m
B) 2.6 × 10-8 m
C) 4.4 × 10-8 m
D) 5.3 × 10-8 m
E) 8.2 × 10-8 m
D
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For the stress-strain diagram of PMMA shown in Figure 6.16, determine the following:
(a) the tangent elastic modulus at 0 strain, (b) the yield stress, (c) the resilience, (d) the ultimate tensile strength, and (e) the toughness.
The speed of light is given by the value of
A.
B.
.C.
.D.
.E.
.James and John dive from an overhang into the lake below. James simply drops straight down from the edge. John takes a running start and jumps with an initial horizontal velocity of 25 m/s. Compare the time it takes each to reach the lake below
A) James reaches the surface of the lake first. B) John reaches the surface of the lake first. C) James and John will reach the surface of the lake at the same time. D) Cannot be determined without knowing the mass of both James and John. E) Cannot be determined without knowing the weight of both James and John.
A child pulls on a wagon with a force of 75N If the wagon moves a total of 42m in 3.1min what is the average power delivered by the child?
A) 21 W B) 22 W C) 26 W D) 17 W