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Three identical 8.80kg masses are hung by three identical springs, as shown in the figure. Each spring has a force constant of 8.20kN/m and was 13.0cm long before any masses were attached to it. How long is each spring (bottom, middle, lower) when hanging as shown?
(Hint: First isolate only the bottom mass. Then treat the bottom two masses as a system. Finally, treat all three masses as a system.)
The mean lifetime of stationary muons is measured to be 2.2 µs. Find the speed of these cosmic-ray muons relative to Earth
A duck is floating on a lake with 22% of its volume beneath thewater. What is the average density of the duck? A 0.50 m multiplied by 0.50 m multiplied by 0.90 m block issuspended from a wire and is completely under water. What buoyant force acts o..
A sledge loaded with bricks has a total mass of 17.4 kilogram and is pulled at fix speed by a rope inclined at 20.2 degree above the horizontal. Compute what is the tension in the rope
q1. a 1.50 kg object is held 1.20 m above a relaxed massless vertical spring with a force constant of 310 nm. the
Two Styrofoam balls, 100 g each, are charged with identical positive charge q and suspended from the equal point by two insulating threads of length L=1 meter, Determine what is the charge q in micro Coulomb
cientists want to place a 2700.0 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 2.4 times the radius of Mars above the surface of the planet. What should the radius of the orbit be
Under standard conditions, the density of air is 1.293 kg/m3 and that of helium is 0.178 kg/m3. What must be the minimum diameter of the spherical balloon
Two hydrogen atoms travelling at the same speed collide headon. The collision brings both atoms to a halt. Immediatelyafter the collision each atom emits a 121.6 photon. What was thespeed of each atom just before the collision?
A circular saw blade of diameter 0.175m starts from rest. In a time interval of 6.05s it accelerates with constant angular acceleration to an angular velocity of 130 rad/s. Find the angle through which the blade has turned
A stunt man (82.0 kg) swings across a valley at the end of a 25.6 m long rope. Find the tension in the rope at the bottom of the swing
In what direction should the pilot travel in this direct flight. Find out the distance she walks.
A crankshaft with a diameter of 3.0 cm , rotating at 2500 rpm comes to a halt in 1.50 s, What is the tangential acceleration of a point on the surface of the crankshaft
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