A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together.
(a) What is the speed of the wreckage just after the collision? (b) In what direction does the wreckage move just after the collision?
Question 2
Four point charges, each of charge 2.5 x 10-5, are located on the x- and y-axes, one at each of the locations (0, 2.0 m), (0, -2.0 m), (2.0 m, 0), and (-2.0 m, 0). The potential at the origin is
A)
2.3 105 V.
B)
4.5 105 V.
C)
3.5 105 V.
D)
1.1 105 V.
E)
0.
The Dall sheep, Ovis dalli, a mountain sheep of far northern North America, was the subject of one o
Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation.
Ivory trade in East Africa during the 1880s and 1890s
This 1900 photograph of steel factories at night in Duquesne, near Pittsburgh, was tinted by hand. S
East–West Differences in Interpreting Emotion
William A. Garnett, Erosion and Strip Farms, East Slope of the Tehachapi Mountains.