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Figure, which is not drawn to scale, shows a four-strand roller chain idler sprocket that rotates on a stationary shaft, supported by two sliding-surface bearings inside the sprocket. The chain transmits 3.7 kW at a chain velocity of 4 m/s, and the sprocket diameter is 122.3 mm. The distance between the inside edges of the sprocket shaft support is 115 mm.
(a) Determine a satisfactory combination of bearing length, diameter, and material.
(b) What considerations other than those taken into account in part (a) might influence the final decision of bearing diameter and length?
A certain atom has atomic number Z = 20 and atomic mass number A = 42. What is the approximate radius of the nucleus of this atom
A stone is dropped from the top of a cliff. The splash it makes when striking the water below is heard 3.0s later. How high is the cliff
A nucleus of the boron-11 isotope consists of five protons and six neutrons. evaluate the magnitude and direction of the electric field
the pressure p in kilopascals volume v in liters and temperature in kelvins of a mole of an ideal gas are related by
A parallel-plate air capacitor of area A = 21.9 cm2 and plate separation of d = 3.60 mm is charged by a battery to a voltage of 64.0 V. how much additional charge will flow from the battery
The electric field at point P just outside the outer surface of a hollow spherical conductor of inner radius 10 cm and outer radius 29 cm has magnitude 457 N/C and is directed outward. What is the charge on the inner surface of the conductor
A 2.0 kilogram cart is initially at rest on a level floor. Determine the kinetic energy of the cart after a constant horizontal 8.0 newton force is applied to the cart over a distance of 1.5 meters
A certain car is capable of accelerating at a rate of 0.63 m/s2. How long does it take for this car to go from a speed of 56 mi/h to a speed of 60 mi/h.
A barber chair rests on a hydraulic cylinder with 10 cm in diameter. A pedal input drives the cylinder having a sectional area of 10 cm2. Calculate the minimum force that must be done on the pedal
Structure Polar's acquisition problem as a decision tree and solve (using EMV criteria) for the optimal decision strategy for Polar.
Squid use jet propulsion for rapid escapes. A squid pulls water into its body and then rapidly ejects the water backward to propel itself forward. What acceleration is experienced by the water
The combination of an applied force and a friction force produces a constant total torque of 36.8 N · m on a wheel rotating about a fixed axis. Find the magnitude of the torque due to friction
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