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Parachutist A parachutist weighing 80 kg, including the parachute, falls with the parachute open at a constant 8.5-m/s speed toward Earth.The drag coefficient Cd = 0.05. What is the area of the parachute?
Two vehicles A & 13 are traveling west and south, respectivelytoward the same direction where they collide and lock together.Before the collision A (total weight 900lb) is moving with a speedof 40mi/h and B (1200 lb) has a speed of 60 mi/h.
An 16--long bicycle crank arm, with a pedal at one end, is attached to a 23--diameter sprocket, the toothed disk around which the chain moves. A cyclist riding this bike increases her pedaling rate from 65 to 95 in 12 . What length of chain passes ov..
a spring is compressed by 2cm and launches a block up an incline (ignore friction). what maximum distance will it travel
In Bosnia, the ultimate test of a young man's courage used to be tojump off a 400 year old bridge (now destroyed) into the RiverNeretva, 23 m below the bridge. How long did the jump last
A circuit contains a 120 V power supply operating at 60 Hz. what elements are in the circuit and what are their values
the generation rate for a contaminant is 25 mgmin. the dilution volume flow rate is 4000 cfm. what is the equilibrium
The drawing shows two situations in which charges are placed on the x and y axes. They are all located at the same distance of 6.1 cmfrom the origin O. For each of the situations in the drawing, determine the magnitude of the net electric field at..
Consider two identical 25-micro-coulomb point charges, each of 18 mg mass. Let them initially be at rest, 80 cm apart. How fast (in m/s) will each charge be moving when the charges are very far apart
A cubical piece of heat-shield-tile from the space shuttle measures 0.15 m on a side and has a thermal conductivity of 0.065J/(s·m·C°). The outer surface of the tile is heated to a temperature of 1240°C, while the inner surface is maintained at a tem..
An inclined plane is sliding, and accelerating, on a horizontal frictionless surface. What is minimum acceleration of the inclined plane
A 6.4-cm-diameter, 10-cm-long cylinder contains 120mg of oxygen (O2) at a pressure less than 1 atm. What is the temperature of the gas
A "swing" ride at a carnival consists of chairs that are swung in a circle by L = 14.2 m cables attached at an angle of ? = 62.7° to a vertical rotating pole. Calculate the tension in the cable attached to the chair
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