In Europe, the combined Mississippian and Pennsylvanian periods are known as the
a. Carboniferous.
b. Devonian.
c. Pliocene.
d. Tertiary.
a
You might also like to view...
Two strings are, respectively, 1.00 m and 2.00 m long. Which of the following wavelengths, in meters, could represent harmonics present on both strings?
A. 0.800, 0.670, 0.500 B. 1.33, 1.00, 0.500 C. 2.00, 1.00, 0.500 D. 2.00, 1.33, 1.00 E. 4.00, 2.00, 1.00
Charge of uniform density 90 nC/m3 is distributed throughout the inside of a long nonconducting cylindrical rod (radius = 2.0 cm). Determine the magnitude of the potential difference of point A (2.0 cm from the axis of the rod) and point B (4.0 cm from the axis)
a. 1.9 V b. 1.4 V c. 2.2 V d. 2.8 V e. 4.0 V
The diagrams below show forces applied to a wheel that weighs 20 N. The symbol W stands for the weight. In which diagram(s) is(are) the wheel in equilibrium?
a.
A
b.
B
c.
C
d.
D
e.
A and C
In an inertia balance, a body supported against gravity executes simple harmonic oscillations in a horizontal plane under the action of a set of springs. If a 1.00 kg body vibrates at 1.00 Hz, a 2.00 kg body will vibrate at
a. 0.500 Hz. b. 0.707 Hz. c. 1.00 Hz. d. 1.41 Hz. e. 2.00 Hz.