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The giant swing at a country fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. Each arm supports a seat suspended from 5.00 m long rod, the upper end of which is fastened to the arm at a point 3.00 cm from the central shaft. Find the time of one revolution of the swing if the rod supporting the seat makes an angle of 30 degrees with the vertical.
As part of a safety investigation, two 1900 kg cars travelling at 19 m/s are crashed into different barriers. Determine the average forces exerted on (1) car that hits a line of water barrels and takes 1.7 s to stop, and (2) car that hits a concre..
A wedge with mass rests on a frictionless horizontal table top. A block with mass is placed on the wedge, find the horizontal component of the acceleration of the wedge
Two equal and opposite charges of magnitude 2.00µC and -2.00µC are held .15 m apart. What force (magnitude & direction) would act on an electron placed at the midway point
A block weighing 15.0 N is attached to the lower end of a vertical spring (k = 122.0 N/m), What is the maximum kinetic energy of the block as it oscillates
he plane is traveling horizontally at 150.0 m/s at a height of 70.0 m above the ground. Illustrate what horizontal distance does the package travel before striking the ground?
A total charge of 14 mC passes through a cross-sectional area of a nichrome wire in 2.8 s. If the number of charges that pass through the cross-sectional area during the given time interval doubles, what is the resulting current
A string passing over a pulley has a 3.70 kg mass hanging from one end and a 2.60 kg mass hanging from the other end. What is the average frictional torque acting on the pulley
A simple pendulum has a period of 3.74 s. The acceleration of gravity is 9.8 m/s^2 What is its length? What would its period be on the Moon
A leather ball of circumference 75.1 cm and mass 583 g is forced to the bottom of a swimming pool and then released. Calculate the buoyant force on the ball
find the velocity and position of the particle asthe moment it reaches it's maximum x coordinate.
q1. in brief explain the changes that the sun will go through after it exhausts its core hydrogen. be sure to describe
A particular satellite was placed in a circular orbit about 161 mi above Earth. Determine the orbital speed of the satellite
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