At what average rate does the force from the cable do work
The loaded cab of an elevator has a mass of 2.7 x 103 kg and moves 228 m up the shaft in 21 s at constant speed. At what average rate does the force from the cable do work on the cab?
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What happened to the Yumbos in Ecuador? In Ronald Lippi's "Tropical Forest Archaeology in Western Pichincha," what evidence did Lippi use to define Yumbo territory?
A horizontal pipe contains water at a pressure of 100 kPa flowing with a speed of 1.5 m/s. The pipe narrows to one-half its original diameter. What are the speed and the pressure of the water when the pipe narrows?
Find the average magnitude of the induced emf if the change in shape occurs in 4.14 s, and the local 0.120 T magnetic field is perpendicular to the plane of the loop.
A 65 kg ice skater coasts with no effort for 85 m until she stops. If the coefficient of kinetic friction between her skates and the ice is µk = 0.13, how fast was she moving at the start of her coast?
A piece of sandstone with a bulk volume of 1.3 cc is contained in a 5-cc cell filled with helium at 760mm Hg? Temperature is maintained constant and the cell is opened to another evacuated cell the same volume.
A 25g rifle bullet traveling 280m/s buries itself in a 3.6kg pendulum hanging on a 2.8m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement.
An example of how repression could be used to protect or ehance a positive self-image?
An electric dipole is formed from +/-4.0 nC point charges spaced 3.0 mm apart. The dipole is centered at the origin, oriented along the y-axis. What is the electric field strength at point (x,y) = ( 6.0 cm, 0 cm)
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