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An old covered bridge across a country stream weighs 89,200N. A large truck stalls 4m from one end of the 9.00-m bridge. What weight must each of the piers support if the truck weighs98,000N?
At a pressure of 1 atm, the heat of vaporization of water is 22,260,000 J/kg; use the first law of thermodynamiics to calculate the heat of vaporization of water at 25 celcius
Trucks with the noted masses moving at the noted speeds crash into barriers that bring them to rest with a constant force
A 45 kg woman stands up in a 60 kg canoe of length 5 meters.She walks from a point 1 meter from one end to a point 1 meter fromthe other end. how far does the canoe move during this process
A circular disk of radius 2.0 m rotates, starting from rest, with a constant angular acceleration of 20.0 rad/s2. What is the tangential acceleration of a point on the edge
before a lightning strike can occur the breakdown limit for damp air must be reached. if this occurs for an electric
A child slides down a slide with a 23° incline, Calculate the coefficient of kinetic friction between the slide and the child
You put a diode in a microelectronic circuit to protect the system in case an untrained person installs the battery backward. what would be the magnitude of the current in the diode
In the deep ocean, a water wave with wavelength 95 m travels at 12 m/s. What will be the vertical position of the boat
The drawing shows three different resistors in two differentcircuits. The battery has a voltage of V = 27 V,and the resistors have resistancesof R1 = 50.0Ω,R2 = 25.0 Ωand R3 = 10.0 Ω. Determine the current through and the voltage across each resist..
A small 0.493 kg object moves on africtionless horizontal table in a circular path of radius1.22 m. The angular speed is6.18 rad/s. The object is attached toa string of negligible mass that passes through a small hole in thetable at the center of ..
If we drop a small metal sphere into the water and watch its motion, it will quickly reach terminal velocity. what is the Reynold's number of this sphere
You have a 12 oz cup of coffee at 180 degrees F. you add 2 ounces of cold water at 40 degrees F. What is the tempertaure of the coffee?
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