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Question: A turntable (disc) of mass = 3 kg , radius = 1.2 m and moment of inertia = 2.16 kgm^2 is spinning about its center at the rate of 7 rad/s. A lump of mass 1.0 kg falls on it and sticks to the surface at a distance 0.7 m from the center. a) calculate the new angular speed of the disc b) if the lump gets unstuck and rolls of the disc.what will now be the angular speed of the disc ?
A system does 112 J of work on its environment and gains 72 J of heat in the process. What is the change in the internal energy of the environment
A box of mass 15 kg slides at a constant velocity, along a flat surface, with a coefficient of kinectic friction of 0.75. how much work is done is done by the normal force
Find the distance(in μm) between the plates of a parallel plate capacitor if, in the dielectriccompletely filling that region, an electric field of magnitude 67.5MV/m gives a potential difference of 34.5 kV between the plates.
If the electric field in an EM wave in free space has a peak magnitude of 7.5*10^-5 v/m, what is the peak magnitude of the magnetic field strength
question1a piece of copper wire has a resistance per unit length of6.1510-3? m. the wire is wound into a thin flat coil
As a 1.00 cm diameter plunger reduces the height of the column of air inside the chamber from 7.00cm down to 0.50cm, Determine the air pressure inside the chamber after compression
To empty a flooded basement, a water pump must do work (liftthe water) at a rate of 2.00 kW. If the pump is wired to a 240-Vsource and is 84% efficient, how much current does it draw
A glass flask whose volume is 1000cm3 at a temperature of 0.500?C is completely filled with mercury at the same temperature. compute the coefficient of volume expansion of the glass
If the 320-N force is instead pulling the block at an angle of 20.0° what will be the acceleration of the crate be
A 30 g steel ball bounces elastically on a steel plate, always returning to the same maximum height h = 14.2 m. With what speed does the ball leave the plate
wo point charges of equal magnitude are 8.2apart. At the midpoint of the line connecting them, Find the magnitude of the charges
A molecule of water vapor causes an electricfield in the surrounding space as if it were an electricdipole. Derive an expression for the electric field due to an electric dipole at a point P at a distance z from thecenter of the dipole
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