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Find what is the rotational kinetic energy of a spherical shell of mass 9 kilogram and radius 0.01 meter, spinning at 60 rad/s? (The rotational inertia of a hollow sphere is given by (2/3)MR2).
A concrete highway is built of slabs 8.0 m long (20°C). How wide should expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of temperature is -35°C to +45°C.
The focal length of the eyepiece of a certain microscope is 18.0 mm. The focal length of the objective is 7.8 mm. find the overall angular magnification of the microscope
A flight attendant pulls her 72.0 N flight bag a distance of 282 m along a level airport floor at a constant speed. The force she exerts is 33.0 N at an angle of 52.0° above the horizontal.
a spacecraft is in orbit around a planet. the radius of the orbit is 3.1 times the radius of the planet which is r
A 2.74-nF parallel-plate capacitor is charged to an initial potential difference ?Vi = 100 V and is then isolated. The dielectric material between the plates is porcelain, with a dielectric constant of 6. (a) How much work is required to withdraw the..
The radius of our Sun is 6.96*10^8 m, and its total power output is 3.85*10^26 W. find lambda-max for the Sun
An airplane has an effective wing surfacearea of 10 m2 that is generating the lift force. What is the weight of the plane
A crankshaft with a diameter of 3.0 cm , rotating at 2500 rpm comes to a halt in 1.50 s, What is the tangential acceleration of a point on the surface of the crankshaft
The cyclist speeds up to a cadence of 120 (120 rotations per minute) in a surge lasting 30 seconds. What is the magnitude of angular acceleration of the wheel
After a day of testing race cars, you decide to take your own 1550 kilogram car onto the test track. Find the average net force that you have applied to the car during the 10 second interval
A man applies a force of F = 3.00 102 N at an angle of 60.0° to a door, x = 1.90 m from the hinges. Find the torque on the door
A vacuum cleaner belt is looped over a shaft of radius 0.44cm and a wheel of radius 1.50cm. What is the speed of a point on the belt
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