An aerobatic airplane pilot experiences weightlessness as she passes over the top of a loop the loop maneuver. the acceleration of gravity is 9.8 m/s^2. if her speed is 430 m/s at this time, find the radius of the loop. answer in units of km.

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

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Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th