At the Mars Pathfinder landing site, the surrounding rocks are scattered and stacked against each other. This suggests that the spacecraft landed in
A) an area of explosive volcanic activity
B) an ancient floodplain
C) an area subjected to wind erosion
D) the debris from a giant impact
B
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Protons and neutrons are held together by the
A. strong nuclear force. B. weak nuclear force. C. electromagnetic force. D. gravitational force.
For the E-glass composite material in Problem 12.1, predict the elastic modulus in the direction perpendicular to the fiber axis.
What will be an ideal response?
A sled weighs 160 N. It is held in place on a frictionless 25.0° slope by a rope attached to a stake at the top; the rope is parallel to the slope. What is the normal force of the slope acting on the sled?
a. 145 N b. 67.6 N c. 177 N d. 379 N e. 74.6 N
The half-life indicates how tightly the nucleons in a nucleus are bound together
a. True b. False Indicate whether the statement is true or false