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A geode is a hallow rock with a solid shell and an air filled interior. Assume a particular geode weighs twice as much in air as it does when completely submerged in water. If the density of the solid part of the geode is 2500kg/m^3, compute what fraction of the geode volume is hallow.
Many of the elements in horizontal-bar exercises can be modeled by representing the gymnast by four segments consisting of arms, torso (including the head), thighs, and lower legs, as shown in figure (b).
A hoodlum throws a stone vertically downward with an initial speedof 11.3 m/s from the roof of abuilding, 28.0 m above theground. How long does it take the stone to reach the ground?
A fully loaded, slow-moving freight elevator has a cab with a total mass of 1100 kg, which is required to travel upward 49 m in 3.9 min, starting and ending at rest. The elevator's counterweight has a mass of only 830 kg, so the elevator motor must h..
Block 2 (mass 1.30 kg) is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 259 N/m. The other end of the spring is fixed to a wall. Block 1 (mass 1.10 kg), traveling at speed v1 = 4.30 m/s, collides w..
Two masses, M1=20.00 kg and M2=12.00 kg, are 50.00 m apart. Find the location of center of mass of the two masses
A toddler, initially standing next to his father in the front yard, walks slowly away from his dad in the direction of 30.0? N of E for 3.50 meters. How far was the distance he walked due south
A block of mass m = 2 kg and initial velocity v = 5 m/s runs into and compresses a spring of spring constant k = 50 N/m. How long is the block in contact with the spring
Two cars are traveling along a straight line in the same direction, the lead car at 25.2m/s and the other car at 31.0m/s. At the moment the cars are 41.9m apart, the lead driver applies the brakes, causing her car to have an acceleration of -2.07m..
A uniform electric field of magnitude 410N/C pointing in the positive x-direction acts on anelectron, which is initially at rest. What is the work done by the field on the electron
A particle moves with constant velocity [4, -2, 1] m/s. If its mass is 3 kg, what is its kinetic energy? One of the forces acting on it is given by F = [-1, 2, 2] N. Find the work done by this force on the particle as it moves a distance of 3 m.
A car is designed to get its energy from a rotating flywheel with a radius of 2.25 m and a mass of 525 kg. What is the kinetic energy stored in the flywheel
A camera has a lens w/ a 52 mm focal length and a sensor array that measures 4.82mm x 3.64 mm, If you want the giraffe to fit the longer dimension of sensory array how far away from the animal will you have to stand
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