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A person in a rocking chair completes 15 cycles in 17 seconds.
A) Determine what is the period of the rocking?
B) Determine what is the frequency of the rocking?
Two pieces of steel wire with identical cross sections have lengths of L and 4L.Each of the wires is fixed at both ends and stretched so that the tension in the longer wire is four times greater than that in the shorter wire. If the fundamental frequ..
As shown, a 86.0 kg bungee jumper wants to jump from the top of a 130 m high bridge and be able to just touch the water below (Part A figure) . Given that the bungee cord has a spring constant of 71.6 N/m, what should the bungee cord's relaxed length..
A 740 N diver drops form a board 9m above the waters surface. The acceleration of gravity is 9.81m/s^2. Find the diver's speed 4.7m above the water's surface
An electric dipole includes a charge of 4 ?C and a second charge. What is the total charge of the dipole
upon what properties of the sound wave do the a loudness b pitch and c quality of a musical note depend? why do the
The earth makes a near circular orbit around the sun(r=1.5 * 10^11m) Assuming uniform circular motion Determine the earth's angular speed, linear speed and centripetal acceleration.
A spherical charged shell of radius R1 is concentric with a spherical charged shell of radius R2=2R1. The surface density of outer shell is +4.0 uC/m2. The electric field out of the outer shell is 0.
At a playground, a 20.2-kg child plays on a slide that drops through a height of 2.40 m. What is the child's speed at the bottom of the slide
A rescue plane flies horizontally at a constant speed searching for a disabled boat, If it takes the sound 2.10 s to reach the plane, determine the speed of the plane and What is its altitude
An ore sample weighs 17.50 in air. When the sample is suspended by alight cord and totally immersed in water, the tension in the cord is11.20 Newton. Find what is the density of the sample
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/48 s. If the operator then brings it to a stop in 3.4 min, what is the angular acceleration of the Ferris wheel
A 1 kg mass (initially at rest) compresses a spring (spring constant 2500 N/m) by 0.2 m, and is released. What is the maximum height achieved by the two masses
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