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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?
A uniform electric field, E = -50 N/C, fills a region of space. A partcicle with mass, m = 0.025 kg, bearing charge, q = 1mC, Determine where and when the particle crosses the x-axis
Hans and Franz pick up the 2.0m long garden. The chair weights 200 N and the center of gravity is 80 cm from Hans end. How much weight does Hans have to lift
the results of a ballistic pendulum measurement are as followsmass of ball m 50 gramsmass of pendulum m250 gramsheight
a string has a linear density of 4.80 10-3 kgm and is under a tension of 345 n. the string is 1.5 m long is fixed at
A uniform 5.50kg square solid wooden gate 2.00mon each side hangs vertically from a frictionless pivot at the center of its upper edge. What is the angular speed of the gate just after it is struck by the unfortunate raven
An air track is tilted so that it makes a small angle with the horizontal. An air cart of mass 0.05 kg is given an initial velocity of 5 m/s as measured by photogates, What is the magnitude of the acceleration for the air cart
Compute the force of tension or compression
Tension is maintained in a string. The observed wave speed is v=22.0 m/s when the suspended mass is m=3.00 kg. What is the mass per unit length of the string
q1. a 750 gram grinding wheel 25.0 cm in diameter is in the shape of a uniform solid disk. we can overlook the small
Describe the energy transformations that take place when askier starts skiing down a hill, but after a time is brought torest by striking a tree. Why is it easier to climb a steep mountain via a zigzagtrail (switchbacks) than to climb straight up?
a certain lightbulb has a tungsten filament with a resistance of 22.5 omega when cold and 141 omega when hot. assume
A block of mass m lies on a horizontal table. The coefficient of static friction between the block and the table is mu_s. If the block is at rest, what is the magnitude of the force due to friction
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