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A steel cable is to support an elevator whose total (loaded) massis not to exceed 3100 kg. If the maximum acceleration of theelevator is 1.2 m/s2, calculate the minimum diameter for the bold, based on a safety factor of 6.0.
A 130 g ball with speed 7.5 m/s strikes a wall perpendicularly and rebounds in the opposite direction with the same speed. find the magnitudes of the average force on the wall
A steel cable with a total length of 25.6 m and total mass of 95 kg is connected to two poles. Calculate the wavelength of the resulting wave on the cable
A radioactive isotope has an activity of 9.32×104 Bq initially. After 3.55 hours the activity is 6.71×104 Bq. What is the half-life of the isotope?
An air-filled capacitor consists of two parallel plates, each with an area of 7.06 cm2, separated by a distance of 1.28 mm, Find the capacitance
Find the magnitude of total displacement of the object
A racket ball is struck in such a way that it leaves the racket with a speed of 4.87m/s in the horizontal direction. Find the height of the racket ball when it left the racket
A student wants to determine the coefficients of static friction and kinetic friction between a box and a plank. What is the coefficient of static friction
A pump is needed to lift 750 L of water per minute a distance of 25.0 M. What power (in KW) must the pump be able to deliver? (1L of water has a mass of 1 kg.)
A plane mirror is lying flat in the x-y plane with its reflecting surface facing up. A point source of light is located at (x=0.0 m, y=2.0 m, z=3.0 m). What is the distance from the object to the image
A ball is thrown nearly vertically upward from a point near the edge of a tall building. it misses the edge of the building in ts way down and passes a point 160ft below its starting point 5 seconds after it leaves the thrower's hand.
At the bottom of the sea a small hole developed at the body of a submarine. at what speed the water is entering into submarine
Two small identical conducting spheres are placed with their centers 25 cm apart. One is given a charge of 20.0 nC and the other given a charge of -36.0 nC. What is the electrical force of each sphere on the other?
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