A brass bar (E 5 110 MPa) of length L 5 2.5 m has diameter d1 5 18 mm over one-half of its length and diameter d2 5 18 mm over the other half. Compare this nonprismatic bar to a prismatic bar of the same volume of material with constant diameter d and length L. The elongation of the prismatic bar under the same load P 5 25 kN is approximately:
(A) 3 mm
(B) 4 mm
(C) 5 mm
(D) 6 mm
(A) 3 mm
You might also like to view...
The solar constant for Earth is
A) 0.7 kW/m2. B) 1.0 kW/m2. C) 1.4 kW/m2. D) more than 1.4 kW/m2.
Kepler's third law, p2 = a3, means that
A) a planet's period does not depend on the eccentricity of its orbit. B) all orbits with the same semimajor axis have the same period. C) the period of a planet does not depend on its mass. D) planets that are farther from the Sun move at slower average speeds than nearer planets. E) All of the above are correct.
It appears that while they are similar in size, Ganymede is much more differentiated than Callisto
Indicate whether the statement is true or false
Of all the planets, the axial tilt and rotation period of ________ is most like our own
A) Earth B) our Moon C) Venus D) Mars E) Mercury