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If a iron core of a collapsing star initially spins with a rotational frequency of fo=3.4 per second and the core radius decrease during the collapse by a factor of 24. what is the rotational frequency of the iron core at the end of collapse
A 0.5 kg mass moves on a plane in a circular path of circumference 1m at a speed of 1.32 m/s. What is the angular momentum of this mass
A certain lightbulb is rated at 95 W when operating at an rms voltage of 1.95 V. What is the peak voltage applied across the bulb
Calculate the net work done on Gas
question1an ideal gas expands at a constant pressure of 6.00 105 pa from a volume of 1.00 m3 to a volume of 4.00 m3 and
The angular speed can be represented as ? = (rad/s)(1 rev/2p rad) = 2.53e7 rev/s. The electrons travel around a circle of radius .07m, 25 million times per second. What is the period of revolution of the electrons
The system is balanced by a support that is 0.300m from the left end of the plank. How far to the right of the support is the plank's center of gravity.
If this system is used with a detector with an intrinsic pulse height resolution of 4%, what will be the expected overall pulse height resolution
The index of refraction for violet light in silica flint glassis 1.66, and that for red light is 1.62. What is the angulardispersion of visible light passing by an equilateral prism ofapex angle 60.0° if the angle of incidence is 50°.
Your television picture is created by 480 horizontal lines of pixels, arranged on a screen of total height h. Calculate this ratio D/h of minimum viewing distance to screen height
Camera A has a lens with an aperture diameter of 8.30mm, What exposure time should be used with camera B in photographing the same object with the same film if this camera has a lens with an aperture diameter of 23.5mm
A train traveling at v0 = 25.0 m/s begins to brake by applying a velocity-dependent instantaneous acceleration a(v) = ? /(v u) m/s2, Determine the distance traveled by the train until it comes to a complete stop
A 1020kg artillery shell is fired from a battleship. While it is in the barrel of the gun, it experiences an acceleration of 2.1x10^4m/s^2. what net force is exterted on the artillery shell before it leaves the barrel of the gun
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