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A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall as shown below. If the iron bar weighs 636 N and the wire is 5.0 m long, what is the magnitude of the vertical component of force produced by the wall?
A 3.80 kg block is pushed along the ceiling with a constant applied force of 85.0 N that acts at an angle of 55.0° with the horizontal, Determine the coefficient of kinetic friction between block and ceiling
The nucleus 124 55 Cs has a half-life of 30.8 s and a molar mass of 124 g. What is the initial activity (decay rate) of the sample
The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. Calculate the energy stored in the capacitor
A 10.0- shell is traveling horizontally to the right at 25.0 relative to the ground when it explodes into two fragments, Find the magnitude of the velocity of the heavier fragment relative to the ground just after the explosion
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 63.0cm mark on the track. What is the maximum speed of the glider
A car traveling at a constant speed of 21.5 m/s passes a trooper hidden behind a billboard. One second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.10 m/s2. How long does it take the ..
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.75 m/s2 for 4.45 s, With what speed does the car then strike the tree
A uniform disk of mass M = 1.6 kg and radius R = 0.18 m rotates counterclockwise at a constant rate of 36 rev/s about its central axis. Determine the radial acceleration of a point on its rim
An 1800W toaster, a 1.3kW electric frying pan, and a 120 W lamp are plugged into the same 35A, 140V circuit. what is the resistance of each device
A farm tractor tows a 3550-kg trailer up a 18?incline with a steady speed of 3.0 m/s. What force does the tractor exert on the trailer
Must show all work!!! A block of mass m =.5kg is pushed against a wall with a force p = 4n orientated at an angle of 50 degrees. find the coefficient of static friction between the block and the wall
A microscope uses an eyepiece with a focal length of 1.43 cm. What is the magnification of the microscope
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