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A truck can move up a road having a grade of 1.0-ft rise every 50-ft with a speed of 15 mi/h. The resisting force is equal to one twenty-fifth the weight of the truck. If its power output is the same, how fast will the same truck move down the hill? Assume that the resisting force remains unchanged.
Physics: Standing Waves, Second Harmonic, Two pieces of steel wire with identical cross-sections have lengths of L and 2L. Each of the wires is fixed at both ends and stretched so that the tension in the longer wire is three times greater than tha..
a 50.0-kg block is being pushed up a 15.0deg slope by a force of 300 n which is directed 30.0deg below the slope. the
A ball thrown horizontally at 30m/s travels a horizontal distance of 44m before hitting the ground. From what height was the ball thrown
A stargazer has an astronomical telescope with an objective whose focal length is 185 cm and an eyepiece whose focal length is 1.20 cm. what is the best angular magnification the stargazer will be able to achieve
A plastic bar is rubbed with fur, and the bar aquires a net charge of +8.34 uC. Determine the net charge on the fur
The latent heat of vaporization of H2O at body temperature (37.0°C) is 2.45E+6 J/kg. how many kilograms of water in the form of sweat have to be evaporated
a cannon fires a 9 lb projectile with an initial velocity of 60 ms at an angle of 15 degrees. assuming that air
A large storage tank, open to the atmosphere at the top and filledwith water, develops a small hole in its side at a point29.0 m below the water level. Determine the speed at which the water leaves the hole
A light bulb is placed at a distance of 15 cm in front of a convex mirror with a radius of curvature of 40 cm. Where is the image of the light bulb
A disk-shaped merry-go-round of radius 2.43 {\rm m} andmass 185 {\rm kg} rotates freely with anangular speed of0.701 {\rm rev/s}.A 60.4 {\rm kg} person runningtangential to the rim of the merry-go-roundat 3.41 {\rm m/s} jumps onto its rimand holds..
Boiling Water at High Pressure. When water is boiled under a pressure of 2.00 atm, the heat of vaporization is 2.20 multiply.gif 106 J/kg, Compute the increase in internal energy of the water
Suppose the tension in a cord is 12.0 N. If the speed of a wave in the cord is 9.50 m/s, then what must be the linear mass density of the cord
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