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A man stands on a platform that is rotating (without friction) with an angular speed of 1.68 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 4.78 kg·m2. If by moving the bricks the man decreases the rotational inertia of the system to 1.69 kg·m2,(a)what is the resulting angular speed of the platform and(b)what is the ratio of the new kinetic energy of the system to the original kinetic energy?
A nozzle of inner radius 1.05 mm is connected to a hose of inner radius 8.03 mm. The nozzle shoots out water moving at 25.5 m/s. At what speed is the water in the hose moving
A circular loop of wire 60 mm in radius carries a current of 100 A. At the center of the loop, what are the following? The magnetic field strength. The energy density
A 30.0- goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 3.50×10?2 and period 1.50. What is the maximum acceleration of the finch
q1. in an 8.00 km race one runner runs at a steady 11.0 kmh and another runs at 14.3 .kmhr.how far from the finish line
The air inside a bicycle tire pump has 243 joules of work done on it as 66.5 joules of heat is conducted away from it
An atom (not a hydrogen atom) absorbs a photon whose associated wavelength is 281 nm, How much net energy (in terms of eV) is absorbed by the atom
Create an accompanying explanation of the concept map explaining its content and organization. What is clearly conveyed in your map and what is not?
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge.
two particle of charge q1 and q2 are separated by distance d. the net electric field due to the particles is zero at
An object is attached to the lower end of a 100-coil springthat is hanging from the ceiling. By how much does each spring stretch
the total electric flux coming out of a cubical box that is 28.0 cm on a side is 128 gnm2c giga newtons times meters
In the "before" part of the figure below, car A (mass 1000 kg) is stopped at a traffic light when it is rear-ended by car B (mass 1600 kg). Both cars then slide with locked wheels until the frictional force from the slick road (with a low µk of 0...
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