A 2.0-m rope is lying on a table. You pick up one end and start raising it vertically. How high above the table is the center of mass of the rope when half of the rope has lifted off the table?
A) 0.25 m
B) 0.50 m
C) 0.75 m
D) 1.0 m
E) 1.5 m
A
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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 12 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 elon-gation of the prismatic bar under the same load P 5 25 kN is approxi-mately:
(A) 3 mm
(B) 4 mm
(C) 5 mm
(D) 6 mm
The density of water is
A) 1.0 kg/m3. B) 1.0 Mg/m3. C) 1.0 × 103 kg/cm3. D) 1.0 × 101 kg/cm3. E) 1.0 × 10-3 g/m3.
Which color of light has the lowest energy photons?
A) red B) yellow C) green D) blue E) orange
A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because of __________
Fill in the blank(s) with correct word