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While walking between gates at an airport, you notice a child running along a moving walkway. Estimating that the child runs at a constant speed of 2.2 m/s relative to the surface of the walkway, you decide to try to determine the speed of the walkway itself. You watch the child run on the entire 23-m walkway in one direction, immediately turn around, and run back to his starting point. The entire trip takes a total elapsed time of 33 s. Given this information, what is the speed of the moving walkway relative to the airport terminal?
Three Identical stars of mass M from an equilateral triangle thatrotates around the triangles center as the stars move in a common circle about thatcenter. What is the speed of the stars
a copper cable is designed to carry a current of 260 a with a power loss of 1.70 wm. what is the required radius of
suppose that the engineer is at x = 0 when, at t = 0, he first spots the locomotive. Sketch x(t) curves for the locomotive and high-speed train for the cases in which a collision is just avoided and is not quite avoided. Do this on paper. Your ins..
It is desired to slip an aluminum ring over a steel bar. At 10 the inside diameter of the ring is 4.550 and the diameter of the rod is 4.580. Find the temperature at which the ring can be removed
A solid disk rotates at an angular velocity of 0.036 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
A doubly charged ion is accelerated to an energy of 35.0 keV by the electric field between two parallel conducting plates separated by 2.20 cm
a machinist turns the power on to a grinding wheel at rest at time t 0 s. the wheel accelerates uniformly for 10 s and
Draft Hypothesis and Design
A doubly charged helium atom whose mass is 6.6 *10^-27 is accelerated by a voltage of 3000 V. What is its period of revolution
Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km, in a period of 365.26 days. what is the angle between the Earth-Sun line and the Mars-Sun line
Both surfaces of a double convex lens have radii of 30.8 cm. what is the index of refraction of the lens material
A photon having E = 25.7 keV energy scatters from a free electron inside a metal. What is the maximum energy the electron can gain from the photon, At which angle will the electron scatter
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