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Find the maximum weight of the sign of the boom has a compressional force of 120 newtons and the cable has a tensional force of 140 newtons? What is the Force of weight of the sigh?
how much work must be done to raise a 1100 kg car 1.5 m above the ground? what is the cars potntial energy afterward
A car speeds up as it turns from travelling due south to dueeast. When exactly halfway around the curve, the car's accelerationis 3.50 m/s 2, What is the radial component of the acceleration at that point
a cement block accidentally falls from rest from the ledge of a 74.3 -m-high building. when the block is 10.6 m above
a horizontal wire is hung from the ceiling of a room by two mass less strings. the wire has a length of 0.20 m and a
A 851-kg car stopped at an intersection is rear-ended by a 1760-kg truck moving with a speed of 17.5 m/s. find the final speed of both vehicles after the collision
A 2.8 kg solid sphere (radius = 0.20 m) is released from rest at the top of a ramp and allowed to roll without slipping, When the sphere reaches the bottom of the ramp
An atom is ionized so that it has only one electron. When the electron drops from the n = 4 shell to the n = 1 shell, an X-ray of wavelength 155.61 pm is emitted. What is the atomic number
A rookie quarterback throws a football with an initial upward velocity component of 15.33 and a horizontal velocity component of 20.4. Overlook air resistance.
Small spheres of diameter 0.92 mm fall through 20°C water with a terminal speed of 0.90 cm/s. Calculate the density of the spheres
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm.Then the ball is pulled down another 4.0 cm and released. a) What is the spring constant? b) What is the period of the oscillation?
using a 60 cm focal length converging lens one wishes to obtain a virtual image which is four times as large as the
a particle of mass m is subject to the delta-function potential vx -alpha deltax with alpha gt 0. evaluate the
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