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A mass of 2.5 kg is suspended from the end of aspring; the other end of the spring is attached to the ceiling. Theequilibrium length of the spring (with no mass attached) is 1.0 m.The length with the mass attached is 1.136 m. (a) Calculate Hooke's contant k for this spring. (b) Now suppose the first mass is replaced by a second mass of 6.7 kg.Calculate the length of the spring in this case.
A bucket filled with dirt of mass 20 kg is suspended by a rope that hangs over a pulley of mass 30 kg and radius 0.25 m. Everything is initially at rest.
A 90.0- and a 45.0- resistor are connected in parallel. Whenthis combination is connected across a battery, the currentdelivered by the battery is 0.376 A. When the 45.0- resistor is disconnected, the currentfrom the battery drops to 0.131 A.
find out the speed with which the pebble strikes the ground when the pebble is fired (a) horizontally, (b) vertically straight up, and (c) vertically straight down
A 26.3 g mass is moving in the +x-direction at 48.8 cm/s while a 25.7 g mass is moving in the -x-direction at 62.8 cm/s. Find their velocity (in cm/s) after the collision
A 47-kg bungee jumper has fallen far enough that her bungee cord is beginning to stretch and resist her downward motion. Find the force (magnitude and direction) exerted on her by the bungee cord
a calculate the resistance per unit length of a nichrome wire which has a radius of 0.321 mm. b if a potential
A tuning fork vibrating at 514 Hzfalls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork
A small spherical insulator of mass 8 x 10 kg and change +0.600 micro Coulomb is hung by a tin wire of negligible mass. A charge of -0.900 micro Coulomb is held 0.150 m away the sphere and straight to the right of it, so the wire makes the angle with..
An object is placed 10.0\; cm in front of an unknown type of mirror that produces an erect image that is 3.11 times larger than the original object. What is the focal length of the mirror
Two of Angie's friends are talking to each other at a distance of 3.0 m from where Angie stands. What sound intensity does he measure for the two talkers
A 21.5 µF spherical capacitor is composed of two metallic spheres, one having a radius twice as large as the other, determine the volume of this region
Ball 1, with a mass of 110 and traveling at 14.0 , collides head on with ball 2, which has a mass of 320and is initially at rest. What are the final velocities of each ball if the collision is perfectly elastic? What are the final velocities of each ..
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