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A 1.0- kg mass is attached to a string wrapped around a shaft of negligible mass and having a 7.0- 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 (see the figure). The mass is released from rest and allowed to fall 1.2 m to the floor. It reaches a speed of 2.4449 m/s just before striking the floor. How far apart are the masses of the dumbbell?
A wire of radius a is surrounded by a cylindrical conductor of inner radius a and outer radius 2a,. find the radius at which the magnetic field is zero
A 4.4 kg box is lifted by a force equal to the weight of the box. The box moves upward at a constant velocity of 3 m/s. What is the power input of the force
A basketball player practices shooting three pointers from a distance of 7.63 m from the hoop, At what initial speed must he shoot to make the basket
The magnetic field in a region of space is specified by its x, y, and z components which are respectively Bx = 0.138 T, By = 0.166 T, find the magnitude and direction of the force acting on the wire
Consider Iron asteroid (density 7900 kg/m^3) shaped like a cylinder 5.0 km long and 3.0 km in diameter, How much fuel is required to spin up the asteroid
Explain, in detail, why the dust clings to the wheels. Be sure to describe forces by name and mention charging by induction, conducting, or rubbing, if it is appropriate. Also illustrate what atoms on Mars must be composed of.
A listener increases his distance from a sound source by a factor of 5.56. what is the change in the sound intensity level in dB
A wood block floats on water with 35% of its volume above the surface (of water), what is the average density of the block (in kg/m3)
A parallel plate capacitor (air filled) that is maintained at a 20.0 V potential difference between plates, Calculate the surface charge density, and the charge on each plate
The intersection is 15 m wide. Her car's maximum deceleration is -5.20 m/s2, whereas it can accelerate from 44km/h to 70km/h in 7.8 s. overlook lengths of her car and her reaction time.
The third floor of a house is 6.00 m above street level. How much work is essential to move a 159 kg refrigerator to the third floor.
What was the temperature of the water before the insertion of the thermometer.
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