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A 1.0-kg mass is attached to a string wrapped around a shaft of negligible mass and having a 8.0-cm radius. A dumbbell-shaped "flywheel" made from two 0.500-kg masses is attached to one end of the shaft and perpendicular to its axis. The mass is released from rest and allowed to fall 0.7 m to the floor. It reaches a speed of 1.2175 m/s just before the striking the floor. How far apart are the masses of the dumbbell?
On dry land, an athlete weighs 70.8kg . The same athlete, when submerged in a swimming pool and hanging from a scale, Find the total volume V of the submerged athlete
A 22 kg block of iron drops out of the back of a pickup truck traveling at 55 mi/h. By roughly how much has the temperature of the iron increased
on a windy day, a person on a cart (combined mass m of 70kg) begins at the top of a hill 10m hihg traveling at 3m/s, At what distance from the bottom of the hill did the car stop
The specifications associated with a commercial spectrophotometer are: Diffraction grating with 600 groves per mm. Focal length,f, 370mm. Blaze angle, first order, 500 nm. What is the reciprocal of the linear dispersion? could the two emission lines ..
A horizontal force of magnitude F = 149 N is used to push a box of mass m = 5 kg from rest a distance d = 13 m up a frictionless incline with a slope q = 22°. How much work is done by the force on the box
A child slides down a slide with a 23° incline, Calculate the coefficient of kinetic friction between the slide and the child
An ideal spring with a spring constant of 16 N/m is suspended vertically. What is the extension of the spring when the speed is a maximum
A boat moves 15 .0 km across a lake in 30.0 min. What is the average speed of the boat in kilometers per hour
A uniform electric field of magnitude 430 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.60 cm. find the work done by the field on the electron
An 825-N sled is pulled a distance of 161 m. The task requires 1.50 ^ 10^4 J of work and is done by pulling on a rope with a force of 137 N. At what angle is the rope held.
A meterstick is initially balanced on a fulcrum at its midpoint. You have four identical masses. Where should the fourth mass be placed in order to balance the meterstick
Calculate the density of the liquid if an aluminum ball with mass of m1 = 4.10kg has an apparent mass of m2 = 1.90kg
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